[-mAx-]

try fluent3DMeshToFoam flat.msh

[Danath]

what kind of erros?

if the geometry is 3D try fluent3DMeshToFoam flat.msh

[archeoptyrx]

Its 2D mesh guys .

the flat plate is at the base of the domain . I created using meshing tool in Ansys workbench . And i saved it as fluent readable one using export option .
(flat.msh)

As i later on found that the .msh file should be in ASCII format but the meshing tool in ansys workbench saves .msh file in binary form.

So i found in one of the threads using dos2unix command to convert to ASCII in my linux system terminal ..

$ dos2unix flat.msh

It shows the following errors .

"binary at line 15
dos2unix is quitting "

What should i do now ?

thanks
sud

[Danath]

try

http://searchitchannel.techtarget.co...ment-variables

[archeoptyrx]

Hi Danath & Maxime Perelli ,

I finally got it converted to open foam readable format .
Now here comes the problem .

I tried running blockMesh after that . IT shows some errors .

I checked the Run/try/constant/polymesh folder for blockmeshdict file .
it has all files like
1.boundary
2.owner
3.faces
4.cellzones
5.facezones
6.pointzones
7.points

but it did not have blockmeshDict .

What should i do now ?

thanks
sud

[archeoptyrx]

Hi nimasam ,

ok . Now i should not type blockMesh in the terminal right ? .. I typ
ed checkMesh . It shows the following errors .



sudharsan@ubuntu:~/OpenFOAM/OpenFOAM-2.2.0/tutorials/incompressible/icoFoam/Cylinder ansysimport$ checkMesh
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.2.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 2.2.0
Exec : checkMesh
Date : May 03 2013
Time : 23:58:44
Host : "ubuntu"
PID : 4001
fileName::stripInvalid() called for invalid fileName /home/sudharsan/OpenFOAM/OpenFOAM-2.2.0/tutorials/incompressible/icoFoam/Cylinderansysimport
For debug level (= 2) > 1 this is considered fatal
Aborted (core dumped)

Originally Posted by nimasam

blockMeshDict is for once that you want to create your mesh in OpenFOAM,
when you import your file from gambit or some where else it is not necessary any more,
now the main file you maybe want to change is "boundary" file in constant/polyMesh
there, you can define your boundary name or type!

also as Max told, another tools are checkMesh and transportPoints

checkMesh is an utility which shows whether your mesh is suitable for OpenFOAM or not and return some essential results of your mesh.

[wyldckat]

Greetings to all!

@archeoptyrx: Rename the folder "Cylinder ansysimport" to "Cylinder_ansysimport", because OpenFOAM doesn't like spaces in folder/file names.

Best regards,
Bruno

[archeoptyrx]

Bruno Santos , Yea that worked.... Thanks

[supercolli]

Originally Posted by archeoptyrx

Hi Danath & Maxime Perelli ,

I finally got it converted to open foam readable format .
Now here comes the problem .

Hi, may I ask you how did you get the problem solved? I'm in the same situation, I can't convert my msh file using dos2unix because it is recognized as binary.
Matteo

[hcx552362]

Originally Posted by -mAx-

it depends on what you want to solve
Choose and copy a tutorial from OF folder (tutorials are sorted with solver).
Then if your mesh is full hexa, you can use following command to import your mesh
>fluentMeshToFoam your_mesh.msh
If your mesh constains any hanging nodes (typical with tetra-hexcore), you need to use the tpoly conversion within fluent, and then in OF use following command:
>fluent3DMeshToFoam your_mesh.msh

Once your mesh is well imported (use checkMesh to be sure everything is ok), you can modify the boundary files in /0 folder

hi Max:
I have the same question. When I run fluentMeshToFoam /...../..msh. it will appear
Form FATAL IO ERROR
cannot find file
file:/home/hu/system/controldict at line 0
from.....and so on


what is the matter? I think you can help me.
Have a nice day

[payal05]

helo ,
can you tell me hw you are converting means which command are you using and where you had kept your mesh files .???

[wyldckat]

Greetings to all!

@hcx552362:

Originally Posted by hcx552362

When I run fluentMeshToFoam /...../..msh. it will appear
Form FATAL IO ERROR
cannot find file
file:/home/hu/system/controldict at line 0
from.....and so on

Although you quoted Max's post, you did not follow all of the instructions, more specifically this one:

Originally Posted by -mAx-

Choose and copy a tutorial from OF folder (tutorials are sorted with solver).

If you do not know what tutorials Max was talking about, I suggest you start reading the OpenFOAM User Guide from the beginning of chapter 2: http://www.openfoam.org/docs/user/tutorials.php

Best regards,
Bruno

[hcx552362]

Originally Posted by payal05

helo ,
can you tell me hw you are converting means which command are you using and where you had kept your mesh files .???

Hi payal05:
firstly, I copy a msh file and put it in the .../tutorials/incompressible/icoFoam/cavity.
secondly, run the code: fluentMeshToFoam/OpenFOAM/hu2.1.x/run/tutorials/incompressible/icoFoam/cavity/hu.msh

above error will appear.

[wyldckat]

Originally Posted by hcx552362

firstly, I copy a msh file and put it in the .../tutorials/incompressible/icoFoam/cavity.
secondly, run the code: fluentMeshToFoam/OpenFOAM/hu2.1.x/run/tutorials/incompressible/icoFoam/cavity/hu.msh

From your description, it looks like you did not run the fluentMeshToFoam from within the "cavity" folder. For example:

cd $FOAM_RUN/tutorials/incompressible/icoFoam/cavity
fluentMeshToFoam hu.msh

[hcx552362]

Originally Posted by wyldckat

From your description, it looks like you did not run the fluentMeshToFoam from within the "cavity" folder. For example:

cd $FOAM_RUN/tutorials/incompressible/icoFoam/cavity
fluentMeshToFoam hu.msh

hi, Thanks for your reply!
I think my .msh from my gambit has some questions. When I use other .msh from other gambit. fluentMeshToFoam works. but I do not know the reason with my gambit?
Have a nice day

[wyldckat]

Originally Posted by hcx552362

but I do not know the reason with my gambit?

Have you tried fluent3DMeshToFoam? Here's a thread on this topic: http://www.cfd-online.com/Forums/ope...eshtofoam.html

[hcx552362]

Originally Posted by wyldckat

Have you tried fluent3DMeshToFoam? Here's a thread on this topic: http://www.cfd-online.com/Forums/ope...eshtofoam.html

Hi
yes, I also use fluent3DToFoam, and the same errpr appears. by the way, my mesh is 2D. I think my mesh has some questions. Can you tell me, what should i do when writing my mesh with gambit tool.
Thank you very much. Have a nice day.

[-mAx-]

you cannot work with 2d in OF.
In Gambit extrude your 2d geometry, and export the 3d mesh in OF with fluent3DMeshToFoam
For the BC, check for instance airFoil2D (incompressible/simpleFoam)

[hcx552362]

Originally Posted by -mAx-

you cannot work with 2d in OF.
In Gambit extrude your 2d geometry, and export the 3d mesh in OF with fluent3DMeshToFoam
For the BC, check for instance airFoil2D (incompressible/simpleFoam)

Hi Max.Thanks for your reply.
firstly, I creat a 2D mesh in the gambit.(choose the solver:Fluent 5/6)
secondly, use the fluent3DMeshToFoam to transfer my mesh.
Is it right?
or
firstly, I must creat 3D mesh in the gambit.(choose the solver :Fluent 5/6)
secondly, use the fluent3DMeshToFoam to transfer my mesh.
Which step is right? Thank you!
Have a nice day!

[yash.aesi]

helo ,
your case is 2D or 3D ?? if it is 2D then why you are giving command fluent3DMeshToFoam when you have created 2D mesh in gambit ...? try with fluentMeshToFoam

hope it will work