CFD Online Discussion Forums - [snappyHexMesh] Two different layer thicknesses with same settings

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)

- OpenFOAM Meshing & Mesh Conversion (https://www.cfd-online.com/Forums/openfoam-meshing/)

- - [snappyHexMesh] Two different layer thicknesses with same settings (https://www.cfd-online.com/Forums/openfoam-meshing/108512-two-different-layer-thicknesses-same-settings.html)

Two different layer thicknesses with same settings

Hello Foamers,

I meshed a case with layers today:

Code:

castellated      true;

snap                true;

addLayers       true;

and realized that there was no layer adding. The output of the layer hight was:

Code:



patch  faces    layers avg thickness[m]

                       near-wall overall

-----  -----    ------ --------- -------

WallBC 36807    4      6.9e-07   4.27e-06

In that case there are no adding layer. I switched off castellated and snap option and tried the layer adding again. Now successfully!
The output therefor is:

Code:



patch  faces    layers avg thickness[m]

                       near-wall overall

-----  -----    ------ --------- -------

WallBC 36807    4      0.000333  0.00206

The question
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Why is snappyHexMesh calculating two different thicknesses with the same settings?

Can someone give me an advice?
Thanks in advance

Tobi

Hi all,

the problem is caused by salome.
The UNV mesh is destroyed or something like that if you export it and convert it into a foam mesh. There are some problems with unused points.

After building the same backgroundmesh in a other way. It works now.

Solved!