Difference between revisions of "OpenFOAM/C3/Importing-mesh-file-in-OpenFOAM/English"
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||Here is a list of command to''' import geometry''' from other '''meshing software'''. | ||Here is a list of command to''' import geometry''' from other '''meshing software'''. | ||
| − | ''' | + | * '''ANSYS : ansysMeshToFoam space <name of the file>''' |
| − | ''' | + | *'''CFX : cfxToFoam space <name of the file>''' |
| − | ''' | + | *'''IDEAS : ideasTofoam space <name of the file>''' |
| − | ''' | + | *'''SALOME : ideasUnvToFoam space <name of the file>''' |
This brings us to the end of the '''tutorial''' | This brings us to the end of the '''tutorial''' | ||
Revision as of 15:56, 22 December 2014
| Visual Cue | Narration |
| Slide 1 | Hello and welcome to the spoken tutorial on Importing Mesh files in OpenFOAM |
| Slide 2 : Learning Objectives | In this tutorial, you will learn how to:
|
| Slide 3 : Pre-requisite | As a pre-requisite, the user should know how to generate a Mesh in software
like -Gambit, Ansys ICEM , CFX, Salome etc.
|
| Slide 4: System Requirement | To record this tutorial I am using
|
| Slide 5:. | Using blockMesh, we can easily make simple geometries.
For example- pipe, box, etc. |
| Narration, no visual cue | It is difficult to create complex geometries using blockMesh.
But OpenFOAM supports importing mesh from third party meshing software. |
| There are commands available in OpenFOAM, to import these mesh files.
We will now learn how to import these files | |
Slide 7 : geometry for the case
Point over the square cylinder point over its length and height point on inlet velocity
|
Here is the geometry of our case.
We have a square cylinder
|
| Slide 8 : | This is the mesh file generated in a meshing software |
| Go to the OpenFOAM > xyz-
2.1.1>run>tutorials>incompressible >icoFoam |
In your OpenFOAM working directory,
go to the icoFoam solver and click on it |
| Create a folder : cylinder | Create a folder by the name cylinder |
| Type cd (space) .. | Go one level back |
| Copy 0 and system folder from
cavity folder in icoFoam |
Copy the 0 and system folders from the cavity case. |
| Paste it in cylinder folder | Then paste it inside the cylinder folder. |
| No constant folder | Note that you do not need the constant folder. |
| Point over the .msh file on the
desktop |
On my desktop, I have a Fluent mesh file with a .(dot) msh extension
It is named as cylmesh.msh |
| Copy-and-paste >> cylinder folder. | Copy-and-paste this file in the cylinder folder in icoFoam.
Our setup is now ready |
| Ctrl+Alt+t keys simultaneously | Open a command terminal and press Enter. |
| In the terminal window >> type run >> press Enter. | Type run and press Enter. |
| Type Incompressible and press
Enter |
Type Incompressible and press Enter |
| Type icoFoam and press Enter | Type icoFoam and press Enter |
| Type cylinder and press Enter | Type cylinder and press Enter. |
| On the terminal >> type fluentMeshToFoam cylmesh.msh
>>Enter |
For a Fluent mesh file, in the command terminal we need to type
fluentMeshToFoam ( space ) cylmesh.msh and press Enter |
| The command terminal will show
the conversion |
On the terminal you will see that the mesh file is converted to openfoam
data file |
| Click on cylinder folder | Go to the cylinder folder |
| Point to the constant folder
Click on constant folder |
The constant folder has been generated
Click on the constant folder to open it. |
| Point showing no transport property file. | Transport Property file is missing from the constant folder |
| constant >> cylinder >> cavity >>
constant – copy the transport property file |
Go two levels back and copy transport property from cavity case |
| Paste inside the constant folder of cylinder
do not change the viscosity |
Paste it inside the constant folder of cylinder which we created just now
We will keep the default viscosity |
| Command Terminal | Switch back to the terminal. |
| Do not run blockMesh command | Note that we do not run blockMesh command here. |
| Boundary conditions in the mesh file | To view the boundary conditions in the mesh file |
| From the command terminal go to the boudary file | Go to Constant > polyMesh > boundary file. |
| Open the file in the text editor | Open it in any editor of your choice. |
| Names are same as sown in the geometry slide | The boundary condition names are same as seen in the geometry slide. |
| In case of boundary name error check this file | In case of any error with boundary names, you can refer to the boundary
file |
| polyMesh >> constant >> 0 folder | Go two levels back and go to the 0 folder. |
| Open the ' p ' file | Now, open the 0 folder and then open the pressure file in an editor |
| Point over the boundary name and
change it to the ones shown in the boundary file |
Note that the boundary names should exactly match with the boundary file.
Change them if needed. Close this |
| ' p '>> 0 >> system folder | Now go two levels back and go to the system folder |
| Make changes in the system folder | We can make some changes in the files of 'system folder |
| Edit the control dict file | We will change the end time of controlDict file in our case
Open the file in a editor |
| Edit and change end time from 5 to 100 | Change it from 5 to 100 and close it. |
| Go to the cylinder folder in terminal | Close this and go two levels back |
| Type icoFoam and press enter | To start the iterations, type icoFoam and press Enter |
| Iterations running in terminal
window |
Iterations will be seen running in the terminal |
| Open paraview | To view the geometry, type paraFoam and press Enter |
| Click on Apply button | In the paraFoam window, click on the Apply button in the object inspector menu |
| Point over the geometry | You can see the geometry |
| Point over the solid color and
change it to U |
In the Active variable control menu, change from solid color to U velocity |
| Point over the velocity condition | The initial velocity condition is seen here |
| Click on the play button of VCR
controls |
Click on the play button of the VCR menu on the top right hand side |
| Point over the geometry | We can see the velocity contours with the passage of time |
| Close paraview | Close the paraview window |
| Let me switch back to the slides | |
| Slide :
List of commands to import mesh files |
Here is a list of command to import geometry from other meshing software.
This brings us to the end of the tutorial |
| Slide : | As an assignment
|
| Slide : Summary | In this tutorial we learnt :
Importing mesh files from third party software into OpenFOAM. |
| Slide 11 :
About Spoken tutorials |
Watch 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 contact@spoken-tutorial.org |
| Slide 13:
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. This project is coordinated by http://spoken-tutorial More information on the same is available at the following URL link http://spoken-tutorial.org/NMEICT-Intro |
| About the contributor | This is Rahul Joshi from IIT BOMBAY signing off.
Thanks for joining
|
