Difference between revisions of "OpenFOAM/C2/Supersonic-flow-over-a-wedge/English"

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| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In this tutorial I will show you
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In this tutorial I will show you
  
−
 
+
*how to solve a '''compressible flow''' problem of '''supersonic flow over a wedge '''
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how to solve a '''compressible flow''' problem of '''supersonic flow over a wedge '''
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*how post process the results in '''paraView'''.
−
 
+
−
 
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how post process the results in '''paraView'''.
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−
 
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−
 
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+
  
 
|-
 
|-
Line 37: Line 31:
  
 
System Requirement
 
System Requirement
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To record this tutorial
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| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To record this tutorial, I am using
  
 +
*''' Linux Operating system Ubuntu version 10.04'''
 +
*'''OpenFOAM version 2.1.0'''
 +
*'''ParaView version 3.12.0'''
  
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I am using''' Linux Operating system Ubuntu version 10.04'''
+
|-
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 4:
  
 +
System Requirement
  
−
'''OpenFOAM version 2.1.0'''
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The tutorials were recorded using the versions specified in previous slide.  
  
 +
Subsequently the tutorials were edited to latest versions.
  
−
'''ParaView version 3.12.0'''
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To install latest system requirements go to Installation Sheet.
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"|
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 4
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| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 5:
  
 
Prerequisites
 
Prerequisites
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To practice this tutorial a learner should have some basic knowledge of
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To practice this tutorial a learner should have some basic knowledge of
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+
*'''Compressible flows''' and
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*'''Gas Dynamics'''
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'''Compressible flows''' and
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−
 
+
−
 
+
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'''Gas Dynamics'''
+
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 5 :
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Let us now solve '''supersonic flow''' over a '''wedge''' using '''OpenFOAM''' and
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Let us now solve  
−
 
+
*'''supersonic flow''' over a '''wedge''' using '''OpenFOAM''' and
−
 
+
*see the '''shock structure''' formed using '''ParaView'''
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see the '''shock structure''' formed using '''paraview'''
+
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 5 :
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| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 6 : Boundary Conditions
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| The problem consists of a wedge  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| The problem consists of a wedge with '''semi-angle of 15 degrees''' kept in a '''uniform supersonic flow'''.
−
 
+
−
 
+
−
with '''semi-angle of 15 degrees''' kept in a  
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−
 
+
−
 
+
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'''uniform supersonic flow'''
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Inlet velocity 5m/s
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Inlet velocity 5m/s
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Inlet velocity is '''5 meters per second'''
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| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''Inlet velocity''' is '''5 meters per second'''
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Boundary conditions as shown in the figure
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Boundary conditions as shown in the figure
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| The '''boundary condition'''s are set as shown in the figure
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| The '''boundary conditions''' are set as shown in the figure.
−
 
+
−
 
+
−
 
+
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 6 : Solver
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| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 7 : Solver
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| The type of solver I am using here is '''rhoCentralFoam'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| The type of '''solver''' I am using here is '''rhoCentralFoam'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| It is a '''Density'''-based '''compressible flow solver'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| It is a '''Density'''-based '''compressible flow solver'''.
  
  
−
It is based on '''central- upwind''' '''schemes of Kurganov and Tadmor '''
+
It is based on '''central- upwind schemes of Kurganov and Tadmor '''
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Switch to the Terminal by Ctrl+Alt+T
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Switch to the Terminal by Ctrl+Alt+T
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Open a '''command terminal '''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Open a '''command terminal '''.
  
  
−
to do this press '''ctrl +alt+ t''' keys '''simultaneously''' on your keyboard
+
To do this press '''Ctrl+Alt+T''' keys simultaneously on your keyboard.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In the '''terminal''' type path for '''supersonic flow''' over a '''wedge'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In the '''terminal''' type path for '''supersonic flow''' over a '''wedge'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In command terminal:
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In command terminal:
  
−
Type run and press enter
+
Type '''run''' and press '''Enter'''.
  
  
 
Problem is already set in OpenFOAM
 
Problem is already set in OpenFOAM
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In the terminal Type ''''run' and press enter'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In the '''terminal''' type ''''run'''' and press '''Enter'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type cd tutorial and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type cd tutorial and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now type '''cd tutorial - '''Press Enter
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now type '''cd tutorial - '''Press '''Enter'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type '''cd compressible - '''Press Enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type '''cd compressible - '''Press Enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''cd compressible - '''Press Enter
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''cd compressible - '''Press '''Enter'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type '''cd rhoCentralFoam - '''Press Enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type '''cd rhoCentralFoam - '''Press Enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''cd rhoCentralFoam - '''Press Enter
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''cd rhoCentralFoam - '''Press '''Enter'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type cd wedge and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type cd wedge and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''cd wedge15Ma5 and press enter'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''cd wedge15Ma5'''
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| This is the name of the folder of '''supersonic flow''' over a wedge in '''rhoCentralFoam'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| This is the name of the folder of '''supersonic flow''' over a wedge in '''rhoCentralFoam'''.
  
−
 
+
And press '''Enter'''.
−
'''and press enter'''
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type ls
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type ls
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| now type''' ls''' and press enter
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now type''' ls''' and press '''Enter'''.
  
 
|-
 
|-
Line 152: Line 138:
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type cd constant and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type cd constant and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now open the '''blockMeshDict file''',
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now open the '''blockMeshDict file'''.
−
 
+
−
 
+
−
to do this
+
  
  
−
type '''cd '''space '''constant''' and press enter
+
To do this, type '''cd space constant''' and press '''Enter'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type cd polyMesh and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type cd polyMesh and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''cd '''space '''polyMesh'''
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| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''cd space polyMesh'''
  
  
−
note that '''M''' here is capital
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Note that '''M''' here is capital and press '''Enter'''.
−
 
+
−
 
+
−
and press enter
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type ls and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type ls and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now type '''ls''' and press enter
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now type '''ls''' and press '''Enter'''.
−
 
+
−
 
+
−
you can see the '''blockMeshDict file'''
+
−
 
+
  
  
 +
You can see the '''blockMeshDict file'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type '''gedit''' '''blockMeshDict''' and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type '''gedit''' '''blockMeshDict''' and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| type '''gedit''' space''' blockMeshDic'''t
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Type '''gedit space blockMeshDict'''.
  
−
note that '''M and D '''here are capital  
+
Note that '''M''' and '''D '''here are capital and press '''Enter'''.
−
 
+
−
 
+
−
and press enter
+
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Drag and scroll down.
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| let me drag this to the '''capture area'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Let me drag this to the '''capture area'''.
  
  
−
scroll down
+
Scroll down.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| enter the data in '''vertices '''but it i already set up in the problem
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| enter the data in '''vertices '''but it i already set up in the problem
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In this you need to '''calculate''' the '''co-ordinates''' for the wedge
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In this you need to calculate the '''co-ordinates''' for the '''wedge'''.
  
  
−
This is already been '''calculated''' and set up in the problem
+
This is already been calculated and set up in the problem.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| The rest of the data remain the same
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| The rest of the data remain the same.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Boundary names similar to that in slide 5
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Boundary names similar to that in slide 5
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In '''boundary patches''' the boundaries are set as shown in the figure  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In '''boundary patches''' the boundaries are set as shown in the figure.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Close the '''blockMeshDict file'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Close the '''blockMeshDict file'''.
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| type : cd .. (twice) and press enter
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type : cd .. (twice) and press '''Enter''' >> wedge folder
−
 
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In the '''command terminal''', type
−
 
+
'''cd ..(dot dot)''' twice to return back to the '''wedge folder'''.
−
wedge folder
+
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| in the '''command terminal'''
+
−
 
+
−
 
+
−
type '''cd ..(dot dot)''' '''twice'''
+
−
 
+
−
 
+
−
to return back to '''wedge folder'''
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now Open the '''0 folder '''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now open the '''0 folder'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type cd 0 and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type cd 0 and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To do this type
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To do this type '''cd space 0''' and press '''Enter'''.
−
 
+
−
 
+
−
'''cd '''space''' 0 and press enter'''
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| type ls and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| type ls and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''type ls and press enter'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Type '''ls''' and press '''Enter'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| this contains initial boundary condition for '''pressure,velocity and Temprature'''  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| This contains initial '''boundary condition''' for '''pressure,velocity''' and '''temprature'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| type cd .. and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| type cd .. and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| type '''cd .. (dot dot)''' and press enter
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Type '''cd .. (dot dot)''' and press '''Enter'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now we need to '''mesh the geometry'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now we need to '''mesh''' the geometry.
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Mesh the geometry
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Mesh the geometry.
  
 
type: blockMesh
 
type: blockMesh
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To do this in the '''command terminal'''  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To do this in the '''command terminal''',
 +
type '''blockMesh''' and press '''Enter'''.
  
  
−
type '''blockMesh''' and Press Enter
+
'''Meshing''' has been done.
−
 
+
−
 
+
−
'''Meshing''' has been done
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Terminal : type paraFoam and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Terminal : type paraFoam and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now to view the geometry in the '''terminal '''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now to view the geometry in the '''terminal''', type '''paraFoam''' and press '''Enter'''.
  
  
−
'''type paraFoam''' and press enter
+
This will open the '''ParaView''' window.
−
 
+
−
 
+
−
This will open the '''paraview''' window
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Paraview window
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Paraview window
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| On the left hand side of '''object inspector menu''' click '''APPLY'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| On the left hand side of '''object inspector menu''' click '''APPLY'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| About wedge geometry
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| About wedge geometry
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In this you can see the '''geometry''' is which is a '''rectangular'''  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In this you can see the '''geometry''' is which is a '''rectangular section upstream'''.
  
 +
changes to a '''wedge downstream'''.
  
−
'''section upstream''' and changes to a '''wedge downstream'''
 
  
−
 
+
Close the '''ParaView''' window.
−
Close the '''paraview''' window
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now run the solver ''''rhoCentralFoam''''  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now run the '''solver 'rhoCentralFoam''''  
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Terminal : rehoCentralFoam and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Terminal : rehoCentralFoam and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To do this in the '''command terminal'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To do this in the '''command terminal''', type '''rhoCentralFoam''' and press '''Enter'''.
−
 
+
−
 
+
−
type '''rhoCentralFoam''' and Press Enter
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Iterations in terminal window
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Iterations in terminal window
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| The '''iterations''' running can be seen in the  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| The '''iterations''' running can be seen in the '''terminal window'''.
−
 
+
−
 
+
−
'''terminal window'''
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''Iterations running''' will stop after it '''converges '''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| '''Iterations''' running will stop after it '''converges'''.
  
  
−
or
+
Or at the end of the '''time step'''.
  
  
−
at the end of the time step
+
Now the''' solving''' has been done.
−
 
+
−
 
+
−
Now the''' solving''' has been done
+
  
 
|-
 
|-
Line 327: Line 275:
  
  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To '''visualise''' these results let us open the  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| To '''visualise''' these results let us open the '''ParaView''' window once again.
−
 
+
−
 
+
−
'''paraview window''' once again
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| type: paraFoam and press enter
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| type: paraFoam and press enter
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In the '''command terminal'''  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In the '''command terminal''', type “'''paraFoam” '''and press '''Enter'''.
−
 
+
−
 
+
−
type “'''paraFoam” '''and press Enter
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Click APPLY in object inspector menu
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Click APPLY in object inspector menu
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Again on the left hand side of  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Again on the left hand side of '''object inspector menu '''click '''APPLY'''.
−
 
+
−
 
+
−
'''object inspector menu '''click '''APPLY'''
+
  
 
|-
 
|-
Line 351: Line 290:
  
 
Select U
 
Select U
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| On the left side top in '''active variable control menu'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| On the left side top in '''active variable control menu''', you will see a dropdown menu showing '''Solid Color'''.
  
−
 
+
Now click on it and change from solid color to capital '''U'''.
−
'''you will see a drop down menu showing solid color.'''
+
−
 
+
−
 
+
−
Now click on it
+
−
 
+
−
 
+
−
'''And change from solid color to capital U'''
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Make the color legend ON
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Make the color legend ON
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now make the '''color legend ON'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now make the '''color legend ON''' by clicking on the left hand side top of '''active variable control menu'''.
−
 
+
−
 
+
−
by clicking on left hand side top of '''active variable control menu'''
+
  
  
−
and make the '''color legend ON'''
+
And make the '''color legend ON'''.
  
  
−
'''click on it'''
+
Click on it.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| On top of the '''paraview window''' you can see the '''VCR control'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| On top of the '''ParaView''' window, you can see the '''VCR control'''.
  
  
−
Click on '''PLAY'''
+
Click on '''PLAY'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In the paraview window
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In the paraview window
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| You can see the final results of '''U velocity'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| You can see the final results of '''U velocity'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In object inspector menu
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In object inspector menu
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now scroll down the  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now scroll down the '''Properties''' in '''Object inspector menu''' on the left hand side.
  
  
−
'''properties''' in '''object inspector menu''' on left hand side
+
Now click on '''Display''' besides '''Properties'''.
−
 
+
−
 
+
−
Now click on '''display''' besides '''properties'''
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Click on rescale to size
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Click on rescale to size
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Scroll down and click on '''Rescale to Size'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Scroll down and click on '''Rescale to Size'''.
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| You can see the final value of '''Velocity magnitude'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| You can see the final value of '''Velocity magnitude'''.
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slect pressure in drop dwon menu (p)
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Select pressure in drop dwon menu (p)
  
  
  
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Similarly you can select '''pressure'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Similarly you can select '''pressure'''.
  
  
−
You can see the final result of '''pressure'''
+
You can see the final result of '''pressure'''.
  
  
−
Now close the '''paraview window'''
+
Now close the '''ParaView''' window.
  
 
|-
 
|-
Line 422: Line 348:
  
 
in terminal type Mach
 
in terminal type Mach
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| You can also calculate the '''Mach''' number for the flow
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| You can also calculate the '''Mach number''' for the '''flow'''.
−
 
+
−
 
+
−
To do this we can use the '''Openfoam '''utility
+
  
  
−
by '''typing Mach in the command terminal '''
+
To do this we can use the '''Openfoam '''utility by typing '''Mach''' in the '''command terminal'''.
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type mach in terminal
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Type mach in terminal.
  
  
 
mach number for each time step
 
mach number for each time step
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Type '''Mach''' in the '''command terminal'''  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Type '''Mach''' in the '''command terminal'''.
  
  
−
Note that '''M''' here is '''capital''' and press enter
+
Note that '''M''' here is capital and press '''Enter'''.
  
  
−
You can see that '''Mach number''' is calculated for each time step
+
You can see that '''Mach number''' is calculated for each '''time step'''.
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Open paraview window
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Open paraview window.
  
  
Line 451: Line 374:
  
 
click APPLY
 
click APPLY
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now again open the '''paraview window'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Now again open the '''ParaView''' window by typing in the '''command terminal paraFoam'''.
  
  
−
By typing in the '''command terminal paraFoam'''
+
And press '''Enter'''.
  
  
−
and press enter
+
Click '''APPLY'''.
−
 
+
−
 
+
−
click '''APPLY'''
+
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In object inspector menu
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In object inspector menu, check the Ma check box.
−
 
+
−
check the Ma check box
+
  
  
 
change from solid color to Ma
 
change from solid color to Ma
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| scroll down
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Scroll down.
  
  
−
In '''volume fields''' '''Check''' the '''Ma '''box and click '''APPLY'''
+
In '''volume fields''' check the '''Ma '''box and again click '''APPLY'''.
  
  
−
On top of''' active variable control menu''' click on '''Solid Color'''
+
On top of''' active variable control menu''' click on '''Solid Color''' and change it to '''Ma'''.
−
 
+
−
 
+
−
and change it to '''Ma'''
+
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In VCR control click on play button
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In VCR control click on play button >> make the color legend ON
−
 
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In the '''VCR control''' menu click on '''PLAY''' and make the '''color legend ON'''.
−
 
+
−
make the color legend ON
+
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In the '''VCR control''' menu click on '''PLAY'''
+
−
 
+
−
 
+
−
and make the '''color legend ON'''
+
−
 
+
−
 
+
−
 
+
  
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In paraview window
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| In paraview window
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| You can see the '''Mach number''' in the''' color legend'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| You can see the '''Mach number''' in the''' color legend''' and corresponding colours.
  
−
 
+
|-
−
and '''corresponding colours'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"|
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| We notice here that when the wedge is kept in a '''supersonic flow''',
 +
*it produces a '''shock''' across which the '''flow properties'''
 +
**temperature
 +
** pressure
 +
** and density
 +
* drastically changes.
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide : For validation
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 8: For validation
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Let me switch back to the '''slides'''
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Let me switch back to the '''slides'''.
  
  
−
The solved tutorial can be '''validated''' with '''exact '''
+
The solved tutorial can be validated with exact solution available in basic books of '''Aerodynamics''' by '''John D Anderson'''.
−
 
+
−
'''solution'''
+
−
 
+
−
 
+
−
'''available '''in basic books of '''Aerodynamics''' by '''John D Anderson'''
+
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide ; Summary
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 9: Summary
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In this tutorial we learnt:
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| In this tutorial we learnt:
  
−
 
+
*'''Solving a compressible flow problem'''
−
'''Solving a compressible flow problem'''
+
*'''Velocity''' and '''pressure contour''' for the '''wedge'''
−
 
+
*'''OpenFOAM utility''' for calculating the '''Mach number'''
−
 
+
−
'''Velocity''' and '''pressure contour''' for the wedge
+
−
 
+
−
 
+
−
'''OpenFOAM utility''' for calculating the '''Mach number'''
+
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 9 : Assignment
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 10 : Assignment
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Assignment:
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Assignment:
  
  
−
Vary the '''wedge angle between 10 ° to 15 ° '''
+
#Vary the '''wedge angle''' between '''10 °''' to '''15 ° '''
−
 
+
#to view the''' shock characteristic''' for the '''flow'''.
−
 
+
−
to view the''' shock characteristic''' for the flow
+
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 10:
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 11:
  
 
About Spoken tutorials
 
About Spoken tutorials
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|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 11:  
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 12:  
  
 
About Spoken tutorials
 
About Spoken tutorials
Line 562: Line 462:
  
 
|-
 
|-
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 12:
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 13:
 +
 
 +
Forum to answer questions
 +
 
 +
Do you have questions on THIS Spoken Tutorial?
 +
Choose the minute and second where you have the question
 +
Explain your question briefly
 +
Someone from the FOSSEE team will answer them. Please visit
 +
http://forums.spoken-tutorial.org/
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"|
 +
 
 +
|-
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 14:
 +
 
 +
Forum to answer questions
 +
 
 +
Questions not related to the Spoken Tutorial?
 +
Do you have general/technical questions on the Software?
 +
Please visit the FOSSEE forum
 +
http://forums.fossee.in/
 +
Choose the Software and post your question
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"|
 +
 
 +
|-
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 15:
 +
 
 +
Lab Migration Project
 +
 
 +
We coordinate migration from commercial CFD software like ANSYS to OpenFOAM
 +
We conduct free Workshops and provide solutions to CFD Problem Statements in OpenFOAM
 +
For more details visit this site:
 +
http://cfd.fossee.in/
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"|
 +
 
 +
|-
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 16:
 +
 
 +
Case Study Project
 +
 
 +
We invite students to solve a feasible CFD problem statement of reasonable complexity using OpenFOAM
 +
We give honorarium and certificate to those who do this
 +
For more details visit this site:
 +
http://cfd.fossee.in/
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| 
 +
 
 +
|-
 +
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 17:
  
 
Acknowledgement
 
Acknowledgement
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Spoken Tutorials are part of Talk to a Teacher project,
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| Spoken Tutorials are part of Talk to a Teacher project.
  
  
Line 574: Line 520:
 
|-
 
|-
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| About the contributor
 
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| About the contributor
−
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| This script has been contributed by Arvind M
+
| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:0.05pt solid #000000;padding:0.097cm;"| This script has been contributed by Arvind N.
  
−
and this is Rahul Joshi from IIT BOMBAY signing off.
+
And this is Rahul Joshi from IIT BOMBAY signing off.
  
 
Thanks for joining.
 
Thanks for joining.
  
 
|}
 
|}

Latest revision as of 12:42, 30 May 2019

Tutorial:Supersonic flow over a wedge using OpenFOAM


Script : Arvind N


Narration: Rahul Joshi


Keywords: Video tutorial,CFD,Wedge,Mach number,Compressible flows.


Visual Cue Narration
Slide 1 Hello and welcome to the spoken tutorial on Supersonic flow over a wedge using OpenFOAM
Slide 2: Learning Objectives In this tutorial I will show you
  • how to solve a compressible flow problem of supersonic flow over a wedge
  • how post process the results in paraView.
Slide 3:

System Requirement

To record this tutorial, I am using
  • Linux Operating system Ubuntu version 10.04
  • OpenFOAM version 2.1.0
  • ParaView version 3.12.0
Slide 4:

System Requirement

The tutorials were recorded using the versions specified in previous slide.

Subsequently the tutorials were edited to latest versions.

To install latest system requirements go to Installation Sheet.

Slide 5:

Prerequisites

To practice this tutorial a learner should have some basic knowledge of
  • Compressible flows and
  • Gas Dynamics
Let us now solve
  • supersonic flow over a wedge using OpenFOAM and
  • see the shock structure formed using ParaView
Slide 6 : Boundary Conditions The problem consists of a wedge with semi-angle of 15 degrees kept in a uniform supersonic flow.
Inlet velocity 5m/s Inlet velocity is 5 meters per second
Boundary conditions as shown in the figure The boundary conditions are set as shown in the figure.
Slide 7 : Solver The type of solver I am using here is rhoCentralFoam.
It is a Density-based compressible flow solver.


It is based on central- upwind schemes of Kurganov and Tadmor

Switch to the Terminal by Ctrl+Alt+T Open a command terminal .


To do this press Ctrl+Alt+T keys simultaneously on your keyboard.

In the terminal type path for supersonic flow over a wedge.
In command terminal:

Type run and press Enter.


Problem is already set in OpenFOAM

In the terminal type 'run' and press Enter.
Type cd tutorial and press enter Now type cd tutorial - Press Enter.
Type cd compressible - Press Enter cd compressible - Press Enter.
Type cd rhoCentralFoam - Press Enter cd rhoCentralFoam - Press Enter.
Type cd wedge and press enter cd wedge15Ma5
This is the name of the folder of supersonic flow over a wedge in rhoCentralFoam.

And press Enter.

Type ls Now type ls and press Enter.
You will see three folders : 0,constant and system.
Type cd constant and press enter Now open the blockMeshDict file.


To do this, type cd space constant and press Enter.

Type cd polyMesh and press enter cd space polyMesh


Note that M here is capital and press Enter.

Type ls and press enter Now type ls and press Enter.


You can see the blockMeshDict file.

Type gedit blockMeshDict and press enter Type gedit space blockMeshDict.

Note that M and D here are capital and press Enter.

Drag and scroll down. Let me drag this to the capture area.


Scroll down.

enter the data in vertices but it i already set up in the problem In this you need to calculate the co-ordinates for the wedge.


This is already been calculated and set up in the problem.

The rest of the data remain the same.
Boundary names similar to that in slide 5 In boundary patches the boundaries are set as shown in the figure.
Close the blockMeshDict file.
Type : cd .. (twice) and press Enter >> wedge folder In the command terminal, type

cd ..(dot dot) twice to return back to the wedge folder.

Now open the 0 folder.
Type cd 0 and press enter To do this type cd space 0 and press Enter.
type ls and press enter Type ls and press Enter.
This contains initial boundary condition for pressure,velocity and temprature.
type cd .. and press enter Type cd .. (dot dot) and press Enter.
Now we need to mesh the geometry.
Mesh the geometry.

type: blockMesh

To do this in the command terminal,

type blockMesh and press Enter.


Meshing has been done.

Terminal : type paraFoam and press enter Now to view the geometry in the terminal, type paraFoam and press Enter.


This will open the ParaView window.

Paraview window On the left hand side of object inspector menu click APPLY.
About wedge geometry In this you can see the geometry is which is a rectangular section upstream.

changes to a wedge downstream.


Close the ParaView window.

Now run the solver 'rhoCentralFoam'
Terminal : rehoCentralFoam and press enter To do this in the command terminal, type rhoCentralFoam and press Enter.
Iterations in terminal window The iterations running can be seen in the terminal window.
Iterations running will stop after it converges.


Or at the end of the time step.


Now the solving has been done.

open paraview


To visualise these results let us open the ParaView window once again.
type: paraFoam and press enter In the command terminal, type “paraFoam” and press Enter.
Click APPLY in object inspector menu Again on the left hand side of object inspector menu click APPLY.
Solid geometry in drop down menu


Select U

On the left side top in active variable control menu, you will see a dropdown menu showing Solid Color.

Now click on it and change from solid color to capital U.

Make the color legend ON Now make the color legend ON by clicking on the left hand side top of active variable control menu.


And make the color legend ON.


Click on it.

On top of the ParaView window, you can see the VCR control.


Click on PLAY.

In the paraview window You can see the final results of U velocity.
In object inspector menu Now scroll down the Properties in Object inspector menu on the left hand side.


Now click on Display besides Properties.

Click on rescale to size Scroll down and click on Rescale to Size.
You can see the final value of Velocity magnitude.
Select pressure in drop dwon menu (p)


Similarly you can select pressure.


You can see the final result of pressure.


Now close the ParaView window.

Calculate the Mach number


in terminal type Mach

You can also calculate the Mach number for the flow.


To do this we can use the Openfoam utility by typing Mach in the command terminal.

Type mach in terminal.


mach number for each time step

Type Mach in the command terminal.


Note that M here is capital and press Enter.


You can see that Mach number is calculated for each time step.

Open paraview window.


type paraFoam


click APPLY

Now again open the ParaView window by typing in the command terminal paraFoam.


And press Enter.


Click APPLY.

In object inspector menu, check the Ma check box.


change from solid color to Ma

Scroll down.


In volume fields check the Ma box and again click APPLY.


On top of active variable control menu click on Solid Color and change it to Ma.

In VCR control click on play button >> make the color legend ON In the VCR control menu click on PLAY and make the color legend ON.
In paraview window You can see the Mach number in the color legend and corresponding colours.
We notice here that when the wedge is kept in a supersonic flow,
  • it produces a shock across which the flow properties
    • temperature
    • pressure
    • and density
  • drastically changes.
Slide 8: For validation Let me switch back to the slides.


The solved tutorial can be validated with exact solution available in basic books of Aerodynamics by John D Anderson.

Slide 9: Summary In this tutorial we learnt:
  • Solving a compressible flow problem
  • Velocity and pressure contour for the wedge
  • OpenFOAM utility for calculating the Mach number
Slide 10 : Assignment Assignment:


  1. Vary the wedge angle between 10 ° to 15 °
  2. to view the shock characteristic for the flow.
Slide 11:

About Spoken tutorials

The video available at this URL:

http://spoken-tutorial.org/What_is_a_Spoken_Tutorial

It summarizes the Spoken Tutorial project.

If you do not have good bandwidth, you can download and watch it.

Slide 12:

About Spoken tutorials

The Spoken Tutorial Project Team

-Conducts workshops using spoken tutorials

-Gives certificates to those who pass an online test

-For more details, please write to us at

contact@spoken-tutorial.org

Slide 13:

Forum to answer questions

Do you have questions on THIS Spoken Tutorial? Choose the minute and second where you have the question Explain your question briefly Someone from the FOSSEE team will answer them. Please visit http://forums.spoken-tutorial.org/

Slide 14:

Forum to answer questions

Questions not related to the Spoken Tutorial? Do you have general/technical questions on the Software? Please visit the FOSSEE forum http://forums.fossee.in/ Choose the Software and post your question

Slide 15:

Lab Migration Project

We coordinate migration from commercial CFD software like ANSYS to OpenFOAM We conduct free Workshops and provide solutions to CFD Problem Statements in OpenFOAM For more details visit this site: http://cfd.fossee.in/

Slide 16:

Case Study Project

We invite students to solve a feasible CFD problem statement of reasonable complexity using OpenFOAM We give honorarium and certificate to those who do this For more details visit this site: http://cfd.fossee.in/

Slide 17:

Acknowledgement

Spoken Tutorials are part of Talk to a Teacher project.


It is supported by the National Mission on Education through ICT, MHRD, Government of India.

More information on the same is available at the following URL link http://spoken-tutorial.org/NMEICT-Intro

About the contributor This script has been contributed by Arvind N.

And this is Rahul Joshi from IIT BOMBAY signing off.

Thanks for joining.

Contributors and Content Editors

Chandrika, DeepaVedartham, Nancyvarkey, Rahuljoshi

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