Converting mesh from Icem CFD to OpenFoam
 

Hello,

I have a problem to import a mesh-file (*.msh), which I created in Ansys Icem CFD, to OpenFoam.

Basically, the mesh describes two circular tubes sticked together like a T-Junction.
When I use the "mshToFoam <*.msh-file>"-command, I receive the following ERROR:




1 /*---------------------------------------------------------------------------*\
2 ========= |
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4 \\ / O peration | Version: 1.7.1
5 \\ / A nd | Web: www.OpenFOAM.com
6 \\/ M anipulation |
7 -------------------------------------------------------------------------------
8
...
19
20 //*****************************************//
21 Create Time
22
23 Trying to read 1128683573 tets.
24
25 Segmentation fault






I have no idea why I receive the "Segmentation fault"-Error, which mistake causes the Error OR where I have to search for the mistake.

I already checked the memory, and there should be enough memory to handle this conversion. This should not be the reason.

I found this following Error-description which could have the same origin:
http://www.openfoam.com/mantisbt/vie...d=104#bugnotes

But honestly, it doesn't help me to fix the Problem.


Does somebody have an idea what to do to find the mistake resp. solve the problem? Perhaps somebody had this problem before and knows how to fix it?
I really need to import this mesh into OpenFoam and run simulations ...!

Many thx

try to use "fluent3DMeshToFoam meshname.msh"

ok, i got it.

there are differences between *.msh-files, although the ending ".msh" is the same.

in my case i used the "FluentV6x"_solver to export the mesh from Ansys, and in OF i used "fluentMeshToFoam" (or as you told me: "fluent3DMeshToFoam") to import the mesh.

following this export/import-procedure, it was finally possible to import the mesh in OF and run simulations on it.

Thank you very much for your help.

hi
 

I'm quite beginner in ICEM and OFoam. From tutorial I found 3 folders for Blockmesh+Polymesh[Pressure+Velocity]..... but when Im going to export a mesh file from icem to OFoam then how I can get this folders.

Is it going to automatically generate @ OFoam itself or .......because I find in some places that we need to make these directory ourselves that is called OF cases but how it's possible..... Can you give some idea /links where It is demonstrated step by step.


Thanking in advance.......

I am Trying to convert fluent mesh to openfoam but it is giving error and i am unable to find where the error is... I am using "fluent3DMeshToFoam" command to convert the mesh.
The error is

/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | foam-extend: Open Source CFD |
| \\ / O peration | Version: 4.0 |
| \\ / A nd | Web: http://www.foam-extend.org |
| \\/ M anipulation | For copyright notice see file Copyright |
\*---------------------------------------------------------------------------*/
Build : 4.0-4fad65ce7cac
Exec : fluent3DMeshToFoam rectangle.msh
Date : Oct 03 2018
Time : 11:00:53
Host : aryan-X550CC
PID : 3791
CtrlDict : "/home/aryan/foam/aryan-4.0/run/rectangle/system/controlDict"
Case : /home/aryan/foam/aryan-4.0/run/rectangle
nProcs : 1
SigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Dimension of grid: 2
Number of points: 1581
Number of faces: 3080
Number of cells: 1500
--> FOAM Warning : Found unknown block of type: "3010"
on line 14


--> FOAM FATAL ERROR:
Do not understand characters: �
on line 15

From function fluentMeshToFoam::lexer
in file fluent3DMeshToFoam.L at line 753.

FOAM exiting



What should i do Please help..
Thanks in Advance.:)

Hi Bimalendu,


try to export the *.msh file in ascii format and run the converter again.

Some old post in cfdo indicate this is necessary for the *ToFoam converters, see this google search



Moreover, it seems the block type 3010 also indicates binary storage format for fluent mesh format (see 3.18.1 in http://www.afs.enea.it/fluent/Public.../PDF/chp03.pdf)






Best regards,
Sebastian