[Manideep Reddy]

Hii all,

I have a very simple problem. When I run the command '' snappyHexMesh -overwrite '' after blockMesh and surfaceFeatureExtract, the boundary file in constant/polymesh folder is not showing all the patches of my geometry. Infact if I just run ''snappyHexMesh'' and copy the latest time mesh's polymesh folder, everything is working fine. What could have been the problem..?

Regards,
Manideep Reddy.

[a_slow_old_man]

Depending on your OF version, you should use

"snappyHexMesh -constant"

for the effect you want.

The -overwrite flag overwrites the current timestep on which you are running SHM.

The -constant flag overwrites the case/constant/polymesh files.

You can always use the -help flag to see an explanation for the utility.

<User:> snappyHexMesh -help

Usage: snappyHexMesh [OPTIONS]
options:
  -case <dir>       specify alternate case directory, default is the cwd
  -checkGeometry    check all surface geometry for quality
  -constant         Output mesh to constant
  -noFunctionObjects
                    do not execute functionObjects
  -overwrite        overwrite existing mesh/results files
  -parallel         run in parallel
  -region <word>    Create a mesh region
  -roots <(dir1 .. dirN)>
                    slave root directories for distributed running
  -time <scalar>    Output mesh to specified time
  -writeDict        Write out mesh dictionary file
  -writeLevel       write pointLevel and cellLevel postprocessing files
  -srcDoc           display source code in browser
  -doc              display application documentation in browser
  -help             print the usage

[Manideep Reddy]

Thanks all .. I solved my problem. There was a problem with dimensions of the geometry. The dimensions in STL file are very large compared to bock mesh dict. So the problem arises..

[sk11]

From version 5.0, There is no option like -constant. And however I have a similar issue while using the overwrite flag. Does anyone else encountered similar issues or solution for this?

[Goddi]

Originally Posted by sk11

From version 5.0, There is no option like -constant. And however I have a similar issue while using the overwrite flag. Does anyone else encountered similar issues or solution for this?

simmilar issue - no solution yet. Did you find anything?


Edit*: my current work arount is using ext-3.1 for mesh generation. There -overwrite still edits polymesh/boundary

[sk11]

Originally Posted by Goddi

simmilar issue - no solution yet. Did you find anything?

I used -overwrite flag and the problem I had was reconstructing because I was using reconstructPar instead of reconstructParMesh. If I remember correctly this solved the problem I had.

[Amirthaa]

It would be helpful if you could try and clarify certain doubts which are seemingly simple but for which I have not been able to find clear answers yet.

1) How to run in openFOAM simultaneously while visualising in paraFoam?
2) What files to execute in openFOAM before viewing in paraFoam an already run program?