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-   -   Problem with layer generation (http://www.cfd-online.com/Forums/openfoam-meshing-snappyhexmesh/95843-problem-layer-generation.html)

bobburnquist January 4, 2012 18:14

Problem with layer generation
 
1 Attachment(s)
Hi Foamers,

i want to generate layers in a small gap (1mm).
Here are my settings, with those i can see some layers:

blockMesh
(
hex (0 1 2 3 4 5 6 7) (30 30 20) simpleGrading (1 1 1)



// In z direction, i have to define 20 cells. With more or less cells, i can not see any layers.
);





snappyDict:
rau1mmzu
{
// Surface-wise min and max refinement level
level (2 2);

//levels 2 3, 3 4... are not possible.

}
refinementBox

{
mode inside;
levels ((1E15 1));



//level 2, 3... is not possible.

}


As u can see in the picture, the mesh is not fine enough. The surface of the rough stl is also not satisfactory.
I changed the layer thickness to false and defined the thickness (min and average) manually to the smallest size (without improvement)


Mabye someone is experienced in meshing a micrometer region, or have an idea.
Tomorrow, i will post my complete snappyDict.


Thanks


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