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-   -   Two different layer thicknesses with same settings (http://www.cfd-online.com/Forums/openfoam-meshing-snappyhexmesh/108512-two-different-layer-thicknesses-same-settings.html)

Tobi October 25, 2012 07:10

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

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


Can someone give me an advice?
Thanks in advance

Tobi

Tobi October 25, 2012 08:04

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!


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