OpenFOAM/C2/Creating-curved-geometry-in-OpenFOAM/English - Revision history

Nancyvarkey at 03:15, 2 June 2019

2019-06-02T03:15:35Z

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DeepaVedartham at 07:05, 30 May 2019

2019-05-30T07:05:08Z

DeepaVedartham at 05:38, 30 May 2019

2019-05-30T05:38:21Z

DeepaVedartham at 05:32, 30 May 2019

2019-05-30T05:32:44Z

DeepaVedartham at 10:10, 16 January 2019

2019-01-16T10:10:51Z

Rahuljoshi at 07:44, 6 March 2013

2013-03-06T07:44:37Z

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Chandrika: Created page with ''''Title of script''': Creating curved geometry in OpenFOAM '''Author''': Rahul Ashok Joshi '''Keywords''': Video Tutorial,Computational Fluid Dynamics (CFD),Curved geometry,Fl…'

2012-11-27T12:58:32Z

Created page with ''''Title of script''': Creating curved geometry in OpenFOAM '''Author''': Rahul Ashok Joshi '''Keywords''': Video Tutorial,Computational Fluid Dynamics (CFD),Curved geometry,Fl…'

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'''Title of script''': Creating curved geometry in OpenFOAM

'''Author''': Rahul Ashok Joshi

'''Keywords''': Video Tutorial,Computational Fluid Dynamics (CFD),Curved geometry,Flow over cylinder.

{| border=1
!Visual Cue
!Narration
|-
| Slide 1
|
Hello and welcome to the spoken tutorial on creating curved geometry in OpenFOAM.

|-
| Slide 2: Learning Objective
|In this tutorial I will show you

How to create a curved geometry

How to view the results in paraview

|-
| Slide 3: System Requirement
|To record this tutorial

I am using Linux Operating system Ubuntu 10.04

OpenFOAM version 2.1.0

ParaView version 3.12.0

|-
| Slide 4:
|.
We will create a geometry for flow over cylinder.

Note that this is an example case for explanation.

The cylinder is in a form of a semi circle.

Meshing is a body fitted grid.

The entire geometry is divided into blocks.

We break the semi circle into equal number of parts

|-
|
|

Open up a blockMeshDict file of the previous tutorial

I have already opened it

Scroll down, for simple geometries you can see that edges is kept empty

|-
|
|
Create a new blockMeshDict file

Right click > create document and new file and name it as blockMeshDict.

Now you can copy the initial few lines from the lid driven cavity upto convertTometers

leave space and enter 1 and semicolon, press enter

After this you need to enter the value of the points in vertices.

Note that the points should be in an ordered way starting from 0,1,2,3 etc. as shown in the figure

After vertices press enter and put the open bracket

Press enter

Now enter the co-ordinates of points as shown in the diagram.

For explanation I will use the right half of the semi-circle.

Enter the values for the points in the figure starting from 0
enter (0.5 0 0)

point 1 (1 0 0)

leave two vertical spaces and enter value for the point 4
(0.707 0.707 0)

enter point 5 (0.353 0.353 0)

again leave 4 vertical spaces and enter point 9 (0 1 0)

point 10 (0 0.5 0)

Similarly enter the values for the remaining points.

Close the bracket and put a semi-colon

Press enter

|-
|
|

Type blocks

In the next line put the open bracket and press enter

There are more number of blocks in this example
Blocks are circled in the figure in previous slide.

In blocks enter the type of block i.e. Hex and
points of the block

For creating the blocks please refer to the tutorial on creating simple geometry in OpenFOAM.

Close the bracket and put semi-colon and press enter

in the next line type edges,

Put the open bracket and press enter

In the next line type arc and leave some space

Type the points which are the end points of the arc

again leave some space insert open close bracket

In brackets enter the co-ordinate value of any intermediate point in between the two arc points.

Let me switch back to slides.

|-
|
|
In the figure you can see that you have to pick up a point in between the two points.

In this geometry I have picked up right half of the circle

Using simple trignometric relation you can find the co-ordinates of the intermediate point shown in the circle.

Similarly you can repeat the procedure for rest of the semi-circle geometry.

Close the bracket and put a semi-colon and press enter

|-
|
|
Enter the boundary patches after arcs

Refer to the tutorial on Simple geometry in OpenFOAM for entering the boundary patches

In the file type mergePatchPairs

put the parenthesis and put a semi-colon and press enter

As there no patches to be merged it can be kept empty
Similarly enter the co-ordinate points for the points in the front face of unit thickness as shown in the figure.

|-
|
|
Open Command terminal

In the command terminal type the path for the case file.

I have already set the path for the tutorial case of flow over cylinder.
|-
|
|
In the command terminal type blockMesh and press enter

blocking is done

Type paraFoam in the terminal and press enter to view the geometry.

On the left side of object menu click Apply

The geometry created will be the one seen in the paraview window.

Scroll down the properties panel of Object inspector.

Check and uncheck the Mesh field box

You can see different regions of the geometry.

You can also see the wire frame of the geometry

On top of active variable control menu in the drop down menu

Change from Surface to wireframe.

|-
|Slide 6:
|
In this tutorial we learnt:
Creating a curved geometry.

How to enter co-ordinates for edges in OpenFOAM

This brings us to the end of the tutorial

|-
|Slide :7
|
As an Assignment

Create a geometry with inner semi-circle of radius 2 and outer circle of radius 4

View the results in paraview

|-
| Slide 8:Summary
|In this tutorial we learnt:
File structure of Lid Driven cavity
Solved lid driven cavity.
Post-processing of solution
Validation.

|-
|Slide 9:
|As as Assignment,
Change some parameters in the lid driven cavity
the velocity magnitude in the '0' folder and
transport properties in the 'constant' folder and
plot the result of u/U and y/L velocity.
This brings us to the end of the tutorial.

|-
|Slide10:
|The video available at this URL:
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 11:
|
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
contacts@spoken-tutorial.org
|-
|Slide 12:Acknowledgement
|
The 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 Author
|This is Rahul Joshi from IIT BOMBAY signing off.
Thanks for joining.

@@ Line 429: / Line 429: @@
 |-
-| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide: for arcs
+| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 6: for arcs
 | 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 figure you can see that you have to pick up a point
@@ Line 524: / Line 524: @@
 |-
-| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide :
+| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 7 :
@@ Line 573: / Line 573: @@
 |-
-| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide: For OpenFOAM v 5.0
+| 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 OpenFOAM v 5.0
 | 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 open cylinder case directory, type the following in your run folder:
@@ Line 643: / Line 643: @@
 |-
-| 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:
@@ Line 655: / Line 655: @@
 |-
-| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide: 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;"| As an Assignment
@@ Line 671: / Line 671: @@
 |-
-| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 8:
+| 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
@@ Line 683: / Line 683: @@
 |-
-| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 9:
+| 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
@@ Line 698: / Line 698: @@
 |-
-| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide : Forum to answer questions
+| 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
-| 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;"| Do you have questions on THIS Spoken Tutorial?
+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:none;padding:0.097cm;"| Slide : Forum to answer questions
+| 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
-| 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;"| Questions not related to the Spoken Tutorial?
+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:none;padding:0.097cm;"| Slide : Lab Migration project
+| 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
-| 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 coordinate migration from commercial CFD software like ANSYS to OpenFOAM
+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:none;padding:0.097cm;"| Slide : Case Study project
+| 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
-| 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 invite students to solve a feasible CFD problem statement of reasonable complexity using OpenFOAM
+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: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 17 :
 Acknowledgement

@@ Line 643: / Line 643: @@
 |-
-| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide
+| 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:0.05pt solid #000000;padding:0.097cm;"| In this tutorial we learnt:
@@ Line 655: / Line 655: @@
 |-
-| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide
+| style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide: 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;"| As an Assignment

← Older revision		Revision as of 05:32, 30 May 2019
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	Type the points which are the '''end points of the arc'''		Type the points which are the '''end points of the arc'''
		+	Let me switch back to the slide

	\|-		\|-

@@ Line 43: / Line 43: @@
 |-
 | style="border-top:none;border-bottom:0.05pt solid #000000;border-left:0.05pt solid #000000;border-right:none;padding:0.097cm;"| Slide 4:
@@ Line 559: / Line 572: @@
 |-
 | 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;"| Now '''Type paraFoam''' in the terminal
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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 10: