Difference between revisions of "OpenFOAM/C2/Creating-simple-geometry-in-OpenFOAM/English-timed"

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|-
 
|-
 
| 00:27
 
| 00:27
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| In '''CFD''' the '''Pre-processing''' part consists of '''creating geometry and meshing''' it.  
+
| In '''CFD''' the '''Pre-processing''' part consists of '''creating geometry and meshing''' it.  
  
 
|-
 
|-
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|-
 
|-
−
| 00:41
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| 00:40
 
| I have already opened the '''command terminal''' and entered  the path for lid driven cavity  
 
| I have already opened the '''command terminal''' and entered  the path for lid driven cavity  
  
 
|-
 
|-
 
|  00:48
 
|  00:48
−
| There are three folders '''0,constant,and system'''  '''Geometry''' is inside the '''polymesh''' folder of '''constant'''
+
| There are three folders '''0,constant,''' and '''system'''  '''Geometry''' is inside the '''polymesh''' folder of '''constant'''
  
 
|-
 
|-
 
| 00:55
 
| 00:55
−
| In the command terminal type '''cd constant''' and press enter
+
| In the command terminal type '''cd space constant''' and press '''Enter'''
  
 
|-
 
|-
 
|  01:03
 
|  01:03
−
| NowType '''ls''' and press enter
+
| Now  type '''ls''' and press '''Enter'''
  
 
|-
 
|-
 
| 01:06
 
| 01:06
−
| In this there is another folder called as''' polymesh'''  
+
| In this there is another folder called as '''polymesh'''  
  
 
|-
 
|-
 
| 01:10
 
| 01:10
−
|Now type '''cd polymesh''' and press enter
+
|Now type '''cd space polymesh''' and press '''Enter'''
  
 
|-
 
|-
 
| 01:18
 
| 01:18
−
|Now  type '''ls''' and press enter
+
|Now  type '''ls''' and press '''Enter'''
  
 
|-
 
|-
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|-
 
|-
 
| 01:30
 
| 01:30
−
| In the terminal type '''gedit blockMeshDict'''( Note that M and D are capital) and press enter
+
| In the terminal type '''gedit space blockMeshDict'''( Note that M and D are capital) and press '''Enter'''
  
 
|-
 
|-
 
| 01:45
 
| 01:45
 
|Let me drag this to the capture area
 
|Let me drag this to the capture area
 +
 
|-
 
|-
 
| 01:49
 
| 01:49
−
|Now '''Minimise''' this  
+
|Now minimise this  
  
 
|-
 
|-
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|-
 
|-
−
|  02:02
+
|  01:59
 
|  The '''blocks''' are numbered starting from''' 0 '''as shown in the figure  
 
|  The '''blocks''' are numbered starting from''' 0 '''as shown in the figure  
  
 
|-
 
|-
 
| 02:08
 
| 02:08
−
| Note that in '''OpenFOAM''' for creating a '''2D geometry'''  
+
| Note that in '''OpenFOAM''' for creating a '''2D geometry''' you need to give a a''' unit cell thickness value''' in the '''z-axis'''.
−
 
+
−
|-
+
−
| 02:12
+
−
| you need to give a a''' unit cell thickness value''' in the '''z-axis'''.
+
  
 
|-
 
|-
 
| 02:19
 
| 02:19
−
|  lid driven cavity is of '''length 1 and height 1''' minimise the slide  
+
|  lid driven cavity is of length 1 and height 1  minimise the slide  
  
 
|-
 
|-
 
| 02:29
 
| 02:29
−
|  On your '''desktop''' create an '''empty file''' by
+
|  On your '''desktop''' create an '''empty file''' by '''right click > create document > Empty file '''  name this as '''blockMeshDict.'''(Note that M and D here are capital).
−
 
+
−
|-
+
−
| 02:33
+
−
| '''right click > create document > Empty file '''  name this as '''blockMeshDict.'''(Note that M and D here are capital).
+
  
 
|-
 
|-
 
|  02:48
 
|  02:48
−
| Open this. Now Copy the data from the original '''lid driven cavity''' blockMeshDict file  
+
| Open this. Now Copy the data from the original '''lid driven cavity''' blockMeshDict file to the new '''blockMeshDict''' file from '''line 0'''.
−
 
+
−
|-
+
−
| 02:55
+
−
| to the new '''blockMeshDict''' file from '''line 0'''.
+
  
 
|-
 
|-
Line 132: Line 121:
 
|-
 
|-
 
|  03:15
 
|  03:15
−
| Scroll down. Now leave some space after converttometers.
+
| Scroll down. Now leave some space after '''converttometers.'''
  
 
|-
 
|-
 
|  03:21
 
|  03:21
−
|  Enter 1 as the geometry is in meters. Insert a semicolon and press enter
+
|  Enter 1 as the geometry is in meters. Insert a semicolon and press '''Enter'''
  
 
|-
 
|-
−
|  03:31
+
|  03:30
−
|Again press Enter in file '''type vertices''' and press enter
+
|Again press '''Enter''' in the file type '''vertices''' and press '''Enter'''
  
 
|-
 
|-
 
|  03:39
 
|  03:39
−
|  Insert the '''open bracket''' and press enter
+
|  Insert the open bracket and press  '''Enter'''
  
 
|-
 
|-
 
|  03:43
 
|  03:43
−
| Press the tab key. Start with point '''0''', insert open, close brackets enter
+
| Press the tab key. Start with point '''0''', insert open, close brackets,  '''Enter'''
  
 
|-
 
|-
 
| 03:52
 
| 03:52
−
| '''(0 space 0 space 0) '''and press enter. Again press tab key open close bracket .
+
| '''0 space 0 space 0 '''and press enter. Again press tab key open close bracket .
  
 
|-
 
|-
 
|  04:02
 
|  04:02
−
|  Move towards   point 1 in positive '''x-axis'''  and enter''' (1 space 0 space 0)''' and press enter
+
|  Move towards point 1 in positive '''x-axis'''  and enter ''' 1 space 0 space 0''' and press '''Enter'''
  
 
|-
 
|-
 
|  04:12
 
|  04:12
−
|Again press tab key open close bracket .move towards point 2 in '''positive x-y plane''' and enter '''(1 space 1 space 0)''' and press enter
+
|Again press tab key open close bracket. Move towards point 2 in '''positive x-y plane''' and enter '''1 space 1 space 0''' and press '''Enter'''
  
 
|-
 
|-
 
|  04:26
 
|  04:26
−
|Again press tab key open close bracket enter the '''3rd point in positive y axis''' '''(0 space 1 space 0 ) '''  press enter
+
|Again press tab key open close bracket enter the '''3rd point in positive y axis''' '''0 space 1 space 0 '''  press '''Enter'''
  
 
|-
 
|-
 
| 04:39
 
| 04:39
−
| Again press tab key  '''enter the 4th point on the front face, open close bracket (0 space 0 space 0.1)''' and press enter
+
| Again press tab key  enter the 4th point on the front face, open close bracket '''0 space 0 space 0.1''' and press '''Enter'''
  
 
|-
 
|-
 
|  04:51
 
|  04:51
−
|  Similarly '''enter the other points''' with one unit value in the '''positive z -axis'''  
+
|  Similarly enter the other points with one unit value in the '''positive z -axis'''  
  
 
|-
 
|-
−
| 04:57
+
| 04:56
−
| close the''' bracket''' and insert a '''semicolon''' after it. Press enter,again press enter
+
| close the bracket and insert a '''semicolon''' after it. Press '''Enter''',again press '''Enter'''
  
 
|-
 
|-
−
| 05:04
+
| 05:03
−
|  Below vertices are the blocks. Type blocks and  press enter. Insert a '''Open bracket''' and press enter  
+
|  Below vertices are the blocks. Type blocks and  press '''Enter'''. Insert a '''Open bracket''' and press enter  
  
 
|-
 
|-
−
| 05:17 
+
| 05:16
−
|let me switch back to the slides
+
|Let me switch back to the slides
  
 
|-
 
|-
 
| 05:19
 
| 05:19
−
| Note that Lid driven cavity is taken as a '''single block '''
+
| Note that '''Lid driven cavity''' is taken as a '''single block '''
  
 
|-
 
|-
 
| 05:24
 
| 05:24
−
| Let me switch back to blockmeshdict
+
| Let me switch back to '''blockmeshdict'''
 +
 
 
|-
 
|-
 
| 05:27
 
| 05:27
−
|Enter the points for the blocks in the'''clockwise''' sense  
+
|Enter the points for the blocks in the '''clockwise''' sense  
  
 
|-
 
|-
 
| 05:31
 
| 05:31
−
|We are using here hexa hedal blocks for meshing.
+
|We are using here '''hexa hedal blocks '''for '''meshing.'''
  
 
|-
 
|-
 
| 05:34
 
| 05:34
−
|Now type '''hex''' leave some space
+
|Now type '''hex''' leave some space  in '''brackets''' enter ''' 0  space  1 2 3 4 5 6 7  ''' again leave some space
  
 
|-
 
|-
−
| 05:39
+
| 05:53
−
| in '''brackets''' enter '''( 0  space  1 2 3 4 5 6 7 ) ''' again leave some space
+
| Note that for '''multiple blocks''' the points will be more.  
−
 
+
−
|-
+
−
| 05:54
+
−
| Note thatFor '''multiple blocks''' the points will be more.  
+
  
 
|-
 
|-
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|-
 
|-
 
| 06:02
 
| 06:02
−
|In '''brackets''' enter '''(30 space 30 space 1)''' ,you can '''modify''' the '''grid'''  as an when needed  
+
|In '''brackets''' open close brakets enter '''30 space 30 space 1''' leave some space , you can modify the '''grid'''  as an when needed  
  
 
|-
 
|-
 
|  06:16
 
|  06:16
−
|'''Grid point in z-axis''' can be taken as one  
+
|'''Grid point''' in '''z-axis''' can be taken as one  
  
 
|-
 
|-
 
|  06:22
 
|  06:22
−
|Now Leave some space and type '''simple grading'''  open close bracket enter '''(1 space 1 space 1) '''
+
|Now leave some space and type '''simple grading'''  leave some space open close bracket enter '''1 space 1 space 1 '''
  
 
|-
 
|-
 
| 06:36
 
| 06:36
−
| This is the grid spacing in the x y and z direction. Press enter.
+
| This is the grid spacing in the x y and z direction. Press '''Enter'''
  
 
|-
 
|-
 
| 06:43
 
| 06:43
−
| Insert Close '''bracket'''   insert a '''semicolon''' and press enter
+
| Insert close '''bracket''',    insert a '''semicolon''' and press '''Enter'''
  
 
|-
 
|-
 
| 06:48
 
| 06:48
−
| Again press enter.Now type '''edges''', and press enter.
+
| Again press '''Enter'''. Now type '''edges''', and press '''Enter'''
 
|-
 
|-
 
| 06:55
 
| 06:55
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|-
 
|-
 
| 07:00
 
| 07:00
−
|  Insert '''open  bracket press enter  close the bracket''' ,insert  a semicolon and press enter
+
|  Insert open  bracket press  '''Enter''',  close the  bracket ,insert  a semicolon and press '''Enter'''
  
 
|-
 
|-
 
|  07:07
 
|  07:07
−
| Again press enter. Below '''edges''' are the '''boundary conditions'''.  
+
| Again press '''Enter'''. Below '''edges''' are the '''boundary conditions'''.  
  
 
|-
 
|-
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|-
 
|-
 
|  07:15
 
|  07:15
−
|Type '''boundary''' and  press enter .  
+
|Type '''boundary''' and  press '''Enter''' .  
  
 
|-
 
|-
 
| 07:19
 
| 07:19
−
|insert a''' open bracket''' and press enter
+
|insert a open bracket and press  '''Enter'''
  
 
|-
 
|-
 
| 07:23
 
| 07:23
−
|Now Let me switch back to the slides  
+
|Now let me switch back to the slides  
  
 
|-
 
|-
 
|07:26  
 
|07:26  
−
|In the geometry the '''upper wall is moving''' and other '''three walls are fixed'''.  
+
|In the geometry the upper wall is moving and other three walls are fixed.  
  
 
|-
 
|-
 
| 07:31
 
| 07:31
−
| The '''front and back faces''' are named as '''empty''' as this is a 2D problem
+
| The front and back faces are named as '''empty''' as this is a 2D problem
  
 
|-
 
|-
 
| 07:39
 
| 07:39
−
| Open the '''New blockMeshDict''' file again
+
| Open the new '''blockMeshDict''' file again
  
 
|-
 
|-
 
|07:42
 
|07:42
−
| In '''boundary''' put the name of the '''patch''' as '''moving wall''' . Press enter
+
| In '''boundary''' put the name of the '''patch''' as '''moving wall''' . Press '''Enter'''
  
 
|-
 
|-
 
| 07:51
 
| 07:51
−
| Now Insert a '''open curly bracket''' and press enter
+
| Now Insert a open curly bracket and press  '''Enter'''
  
 
|-
 
|-
 
| 07:56
 
| 07:56
−
| Now Enter the '''type''' for the '''moving wall''' , enter '''type'''   '''wall'''   
+
| Now enter the '''type''' for the '''moving wall''' , enter '''type''' space  '''wall'''   
  
 
|-
 
|-
 
| 08:06
 
| 08:06
−
| insert a '''semicolon''' and press enter
+
| insert a '''semicolon''' and press '''Enter'''
 
|-
 
|-
 
| 08:09
 
| 08:09
−
|Now insert open bracket, and press enter. Press the tab key. Open close bracket.
+
|Now insert open bracket, and press '''Enter'''. Press the tab key. Open close bracket.
 
|-
 
|-
 
|  08:20
 
|  08:20
−
|In this bracket enter the pointfor faces
+
|In this bracket enter the pointfor for faces
 
|-
 
|-
 
|  08:24
 
|  08:24
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|-
 
|-
 
|  08:34
 
|  08:34
−
| And '''fingers''' making a '''curl ''' as shown in the figure .
+
| And fingers making a curl  as shown in the figure .
  
 
|-
 
|-
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|-
 
|-
 
|  08:43
 
|  08:43
−
| Also note that the '''points''' should match with the '''points inserted in vertices'''
+
| Also note that the points should match with the points inserted in vertices
  
 
|-
 
|-
 
|  08:48
 
|  08:48
−
|Now let me switch back to the new blockmeshdict file .
+
|Now let me switch back to the new '''blockmeshdict''' file .
 +
 
 
|-
 
|-
 
|  08:52
 
|  08:52
−
|Now in the faces enter '''(3 space 7 space 6 space 2)'''.
+
|Now in the faces enter '''3 space 7 space 6 space 2'''.
 
|-
 
|-
 
|  09:01
 
|  09:01
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|-
 
|-
 
| 09:09
 
| 09:09
−
|Minimise this. Note that you can start from any point on that face. Now press enter
+
|Minimise this. Note that you can start from any point on that face. Now press '''Enter'''
 
|-
 
|-
 
| 09:17
 
| 09:17
−
|Close the bracket again press enter. Close the curly bracket.
+
|Close the bracket again press '''Enter'''. Close the curly bracket.
 
|-
 
|-
 
| 09:22
 
| 09:22
−
|Another note we need to enter a semi- colon after you insert the points, a faces now after the curly brackets press enter again press enter
+
|Another note we need to enter a semi- colon, after you insert the points, a faces now after the curly brackets, press '''Enter''' again press '''Enter'''
  
 
|-
 
|-
 
| 09:35
 
| 09:35
−
|Now Similarly enter '''boundary condition''' and '''faces''' for the '''fixed wall '''
+
|Now similarly enter '''boundary condition''' and '''faces''' for the '''fixed wall '''
  
 
|-
 
|-
 
| 09:40
 
| 09:40
−
| Being a 2D problem the '''type of boundary''' for '''front and back face''' can be kept as '''empty'''.
+
| Being a 2D problem the type of boundary for front and back face can be kept as empty.
 
|-
 
|-
 
| 09:46
 
| 09:46
Line 353: Line 340:
 
|-
 
|-
 
| 09:52
 
| 09:52
−
| '''Insert  the closed brackets''' put a '''semicolon''' and press enter again press enter.
+
| Insert  the closed brackets, put a '''semicolon''' and press '''Enter''',  again press '''Enter'''
  
 
|-
 
|-
 
| 09:59
 
| 09:59
−
|Now type mergePatchPairs and press enter.
+
|Now type '''mergePatchPairs''' and press '''Enter'''
  
 
|-
 
|-
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|-
 
|-
 
| 10:08
 
| 10:08
−
| Insert  open close bracket. Insert a semi-colon and press enter.
+
| Insert  open close bracket. Insert a semi-colon and press '''Enter'''
 
|-
 
|-
 
| 10:14
 
| 10:14
−
| We are done with creating the  blockmeshdict file. Save this    
+
| We are done with creating the  '''blockmeshdict''' file. Save this    
 
|-
 
|-
−
| 10:19
+
| 10:18
 
| The complete''' blockMeshDict '''file is as shown here.  
 
| The complete''' blockMeshDict '''file is as shown here.  
  
 
|-
 
|-
 
|10:26
 
|10:26
−
| Close the '''both the blockMeshDict''' files
+
| Close '''both the blockMeshDict''' files
  
 
|-
 
|-
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|-
 
|-
 
|  10:35
 
|  10:35
−
|  Come back to the termina.l now type '''cd (dot) (dot)''' twice to return back to the '''cavity''' folder. Now '''Mesh the geometry'''  
+
|  Switch back to the terminal. Now type '''cd (dot) (dot)''' twice to return back to the '''cavity''' folder. Now '''Mesh the geometry'''  
  
 
|-
 
|-
−
|10:46
+
|10:45
−
|To do this in  a '''terminal''' type: '''blockMesh''' and press enter
+
|To do this in  a '''terminal''' type: '''blockMesh''' and press '''Enter'''
  
 
|-
 
|-
 
| 10:53
 
| 10:53
−
|Now View the '''geometry''' by typing in the '''command terminal''' '''paraFoam''' and press enter
+
|Now View the '''geometry''' by typing in the '''command terminal''' '''paraFoam''' and press '''Enter'''
  
 
|-
 
|-
−
| 11:00
+
| 10:59
 
| This will open the ''' ParaView window'''
 
| This will open the ''' ParaView window'''
  
 
|-
 
|-
−
| 11:04
+
| 11:03
−
| Now On the left hand side click '''Apply''' on '''object inspector menu'''thus you can see the geometry.
+
| Now On the left hand side click '''Apply''' on '''object inspector menu''' thus you can see the geometry.
  
 
|-
 
|-
 
| 11:13
 
| 11:13
−
| now let me switch back to  theslides
+
| Now let me switch back to  the slides
  
 
|-
 
|-
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|-
 
|-
 
| 11:31
 
| 11:31
−
| Change the direction  of lid driven cavity ,Change  the  '''grid size''' to '''(50 50 1)'''and View the geometry in '''paraview'''  
+
| Change the direction  of '''lid driven cavity''' ,Change  the  '''grid size''' to '''50 50 1'''and View the geometry in '''paraview'''  
  
 
|-
 
|-
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|-
 
|-
−
| 11:47
+
| 11:46
 
| If you do not have good bandwidth, you can download and watch it.  
 
| If you do not have good bandwidth, you can download and watch it.  
  

Revision as of 15:01, 23 October 2015

Time Narration
00:01 Hello and welcome to the spoken tutorial on creating a simple geometry in OpenFOAM
00:06 In this tutorial I will show you
00:08 How to create a simple geometry
00:11 How to view the geometry in paraview
00:15 To record this tutorial
00:16 I am using Linux Operating system Ubuntu version10.04 OpenFOAM version 2.1.0 ParaView version 3.12.0
00:27 In CFD the Pre-processing part consists of creating geometry and meshing it.
00:33 Let us take the Lid driven cavity case of the previous tutorial as an example.
00:38 Recall the path for he earlier tutorial,
00:40 I have already opened the command terminal and entered the path for lid driven cavity
00:48 There are three folders 0,constant, and system Geometry is inside the polymesh folder of constant
00:55 In the command terminal type cd space constant and press Enter
01:03 Now type ls and press Enter
01:06 In this there is another folder called as polymesh
01:10 Now type cd space polymesh and press Enter
01:18 Now type ls and press Enter
01:22 This contains the geometry file called as blockMeshDict
01:26 Open the blockMeshDict file with any editor of your choice
01:30 In the terminal type gedit space blockMeshDict( Note that M and D are capital) and press Enter
01:45 Let me drag this to the capture area
01:49 Now minimise this
01:53 Let me switch back to the slides
01:55 In openfoam the entire geometry is broken into blocks
01:59 The blocks are numbered starting from 0 as shown in the figure
02:08 Note that in OpenFOAM for creating a 2D geometry you need to give a a unit cell thickness value in the z-axis.
02:19 lid driven cavity is of length 1 and height 1 minimise the slide
02:29 On your desktop create an empty file by right click > create document > Empty file name this as blockMeshDict.(Note that M and D here are capital).
02:48 Open this. Now Copy the data from the original lid driven cavity blockMeshDict file to the new blockMeshDict file from line 0.
02:59 Scroll up line 0 upto convertTometers. Copy this and paste it here.
03:15 Scroll down. Now leave some space after converttometers.
03:21 Enter 1 as the geometry is in meters. Insert a semicolon and press Enter
03:30 Again press Enter in the file type vertices and press Enter
03:39 Insert the open bracket and press Enter
03:43 Press the tab key. Start with point 0, insert open, close brackets, Enter
03:52 0 space 0 space 0 and press enter. Again press tab key open close bracket .
04:02 Move towards point 1 in positive x-axis and enter 1 space 0 space 0 and press Enter
04:12 Again press tab key open close bracket. Move towards point 2 in positive x-y plane and enter 1 space 1 space 0 and press Enter
04:26 Again press tab key open close bracket enter the 3rd point in positive y axis 0 space 1 space 0 press Enter
04:39 Again press tab key enter the 4th point on the front face, open close bracket 0 space 0 space 0.1 and press Enter
04:51 Similarly enter the other points with one unit value in the positive z -axis
04:56 close the bracket and insert a semicolon after it. Press Enter,again press Enter
05:03 Below vertices are the blocks. Type blocks and press Enter. Insert a Open bracket and press enter
05:16 Let me switch back to the slides
05:19 Note that Lid driven cavity is taken as a single block
05:24 Let me switch back to blockmeshdict
05:27 Enter the points for the blocks in the clockwise sense
05:31 We are using here hexa hedal blocks for meshing.
05:34 Now type hex leave some space in brackets enter 0 space 1 2 3 4 5 6 7 again leave some space
05:53 Note that for multiple blocks the points will be more.
05:58 After this enter the grid points in the x,y,and z directions
06:02 In brackets open close brakets enter 30 space 30 space 1 leave some space , you can modify the grid as an when needed
06:16 Grid point in z-axis can be taken as one
06:22 Now leave some space and type simple grading leave some space open close bracket enter 1 space 1 space 1
06:36 This is the grid spacing in the x y and z direction. Press Enter
06:43 Insert close bracket, insert a semicolon and press Enter
06:48 Again press Enter. Now type edges, and press Enter
06:55 As this is a simple geometry edges can be kept empty
07:00 Insert open bracket press Enter, close the bracket ,insert a semicolon and press Enter
07:07 Again press Enter. Below edges are the boundary conditions.
07:11 Here you need to enter the boundary name for the faces
07:15 Type boundary and press Enter .
07:19 insert a open bracket and press Enter
07:23 Now let me switch back to the slides
07:26 In the geometry the upper wall is moving and other three walls are fixed.
07:31 The front and back faces are named as empty as this is a 2D problem
07:39 Open the new blockMeshDict file again
07:42 In boundary put the name of the patch as moving wall . Press Enter
07:51 Now Insert a open curly bracket and press Enter
07:56 Now enter the type for the moving wall , enter type space wall
08:06 insert a semicolon and press Enter
08:09 Now insert open bracket, and press Enter. Press the tab key. Open close bracket.
08:20 In this bracket enter the pointfor for faces
08:24 Let me switch to the slide
08:27 Note that order of the points should be in such a way that the thumb should be normal to the face
08:34 And fingers making a curl as shown in the figure .
08:39 The curl can be clockwise or anti- clockwise
08:43 Also note that the points should match with the points inserted in vertices
08:48 Now let me switch back to the new blockmeshdict file .
08:52 Now in the faces enter 3 space 7 space 6 space 2.
09:01 Let me switch back to the slide. These are the point for the moving wall 3,7,6,2.
09:09 Minimise this. Note that you can start from any point on that face. Now press Enter
09:17 Close the bracket again press Enter. Close the curly bracket.
09:22 Another note we need to enter a semi- colon, after you insert the points, a faces now after the curly brackets, press Enter again press Enter
09:35 Now similarly enter boundary condition and faces for the fixed wall
09:40 Being a 2D problem the type of boundary for front and back face can be kept as empty.
09:46 Refer to the figure in the slide. For entering the points. Minimise this
09:52 Insert the closed brackets, put a semicolon and press Enter, again press Enter
09:59 Now type mergePatchPairs and press Enter
10:04 Since their are no patches to merge it can be kept empty
10:08 Insert open close bracket. Insert a semi-colon and press Enter
10:14 We are done with creating the blockmeshdict file. Save this
10:18 The complete blockMeshDict file is as shown here.
10:26 Close both the blockMeshDict files
10:29 Note that the command terminal will not work until blockMeshDict file is closed
10:35 Switch back to the terminal. Now type cd (dot) (dot) twice to return back to the cavity folder. Now Mesh the geometry
10:45 To do this in a terminal type: blockMesh and press Enter
10:53 Now View the geometry by typing in the command terminal paraFoam and press Enter
10:59 This will open the ParaView window
11:03 Now On the left hand side click Apply on object inspector menu thus you can see the geometry.
11:13 Now let me switch back to the slides
11:16 In this tutorial we learnt:
11:18 Creating a simple geometry in OpenFOAM
11:22 Viewing the geometry in Paraview
11:25 This brings us to the end of the tutorial
11:29 As an Assignment
11:31 Change the direction of lid driven cavity ,Change the grid size to 50 50 1and View the geometry in paraview
11:41 Watch the video available at this URL: http://spoken-tutorial.org/What_is_a_Spoken_Tutorial
11:44 It summarizes the Spoken Tutorial project.
11:46 If you do not have good bandwidth, you can download and watch it.
11:51 The Spoken Tutorial Project Team
11:53 -Conducts workshops using spoken tutorials
11:55 -Gives certificates to those who pass an online test
11:59 -For more details, please write to contact@spoken-tutorial.org
12:05 Spoken Tutorial project is part of Talk to a Teacher project,
12:09 It is supported by the National Mission on Education through ICT, MHRD, Government of India.
12:15 More information on the same is available at the following URL link http://spoken-tutorial.org/NMEICT-Intro
12:19 This is Rahul Joshi from IIT BOMBAY signing off.Thanks for joining.

Contributors and Content Editors

DeepaVedartham, Gaurav, PoojaMoolya, Pratik kamble, Sandhya.np14, Sneha

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