CFD Online Discussion Forums - [snappyHexMesh] snappyHexMesh feature edge

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- - [snappyHexMesh] snappyHexMesh feature edge (https://www.cfd-online.com/Forums/openfoam-meshing/89669-snappyhexmesh-feature-edge.html)

Meshing usig snappyHexMesh

Hi Everyone!,

I have been trying to mesh using snappyHexMesh a rectangular domain with a cylinder inside. Although I was able to mesh it, the surface mesh is not that good. Also the edges with layers are having bad elements. I will be using icoLagrangianFoam solver and good surface mesh is important.

I am attaching the snappyHexMesh file.

Can anyone look through this and tell me what can i modify to improve the mesh quality.:o:o:o

Thanks in advance

Regards
Subhasree

surfaceFeatureExtract error

I got the following error when i tried to get the .eMesh file from the .stl file. Is there any problem with my openfoam installation. Do I need to reinstall the entire thing once again?

Code:

$ surfaceFeatureExtract -includedAngle 150 -writeObj constant/triSurface/airfoil.stl airfoil



Usage: surfaceFeatureExtract [OPTIONS]

options:

  -case <dir>       specify alternate case directory, default is the cwd

  -dict <file>      read control dictionary from specified location

  -noFunctionObjects

                    do not execute functionObjects

  -srcDoc           display source code in browser

  -doc              display application documentation in browser

  -help             print the usage



extract and write surface features to file



Using: OpenFOAM-3.0.1 (see www.OpenFOAM.org)

Build: 3.0.1-d8a290b55d28







--> FOAM FATAL ERROR: 

Wrong number of arguments, expected 0 found 3

Invalid option: -writeObj

Invalid option: -includedAngle





FOAM exiting

Can anyone explain the reason i am getting this error message?

Hi,

Your format for surfaceFeatureExtract is based on OF-2.1 and possibly older.

The new ones from OF-2.2 require a surfaceFeatureExtractDict where you specify the includedAngle and the like...

Cheers,
Antimony