[LVDH]

Waiting for your mesh to finish seems to be boring:
With the blockMesh and the refinement of 7 at the cube you get cells in the region of 1mm there.
With your first cell layer height and the 55 layers with the 1.1 growth rate the surface layers will be larger than the surrounding normal cells. So your 55 layers are too much geometrically and for sure for shm.

[LVDH]

OK,

I changed this in the blockMeshDict:

hex (0 1 2 3 4 5 6 7) (45 30 30) simpleGrading (1 1 1)

and if I remember correctly this in the shmDict:

castellatedMeshControls
{
    // Resolve sharp angles
    resolveFeatureAngle 30;
...


addLayersControls
{

    relativeSizes true;
    firstLayerThickness 0.05;
    minThickness 0;
    featureAngle 330;
    slipFeatureAngle 330;
...

I used the implicit feature snap. This is not important. I first recommended because I did not know that you knew how to use the eMesh stuff. I now used it because I am lazy.

The picture attached shows 25 surface layers. They are around the edge. However they obviously do not look super nice. I do not think that you could repair this with shm. Ten layers should probably be the max.

[jiaodanuma]

Originally Posted by LVDH

OK,

I changed this in the blockMeshDict:

hex (0 1 2 3 4 5 6 7) (45 30 30) simpleGrading (1 1 1)

and if I remember correctly this in the shmDict:

castellatedMeshControls
{
    // Resolve sharp angles
    resolveFeatureAngle 30;
...


addLayersControls
{

    relativeSizes true;
    firstLayerThickness 0.05;
    minThickness 0;
    featureAngle 330;
    slipFeatureAngle 330;
...

I used the implicit feature snap. This is not important. I first recommended because I did not know that you knew how to use the eMesh stuff. I now used it because I am lazy.

The picture attached shows 25 surface layers. They are around the edge. However they obviously do not look super nice. I do not think that you could repair this with shm. Ten layers should probably be the max.

Yeah, it looks much better now. However, when I tried to re-implement the mesh generation to add 25 layers as the code you mentioned, the mesh was not the same with yours as shown in the picture. If possible, could you please upload the shmDict file you modified, which will be very helpful for me to compare with my current code and try to understand each utility. Thanks a lot!

[LVDH]

25 layers work fine. I used OF 3.0.1.
I have attached the shmDict.
When you run the mesh you will notice new issues though. You will have to fine tune some other parameters in the shmDict. But at least you now get your layers.

[jiaodanuma]

Originally Posted by LVDH

25 layers work fine. I used OF 3.0.1.
I have attached the shmDict.
When you run the mesh you will notice new issues though. You will have to fine tune some other parameters in the shmDict. But at least you now get your layers.

Many many thanks for your help!