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[snappyHexMesh] no layer added

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Old   August 14, 2019, 02:20
Default no layer added
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Hyeoksu Lee
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Hi everyone,

I have a problem with mesh generation using snappyHexMesh. I tried to add layers by changing parameters in addLayerControls but I didn't work.

After only one layer iteration, the layer addition step was stopped with no layer like this.

Quote:
patch faces layers overall thickness
[m] [%]
----- ----- ------ --- ---
hull 14679 0 0 0

Layer mesh : cells(local):158611 faces(local):503308 points(local):187900
Layer mesh : cells:158611 faces:503308 points:187900
Cells per refinement level:
0 121562
1 16283
2 9406
3 11360
I don't understand why this process was stopped without added layers.
And the log said that there are 'Layer mesh' but I don't know what this mean.

To fix this, I tried following options.
- set 'relativeSizes' true
- reduce 'nSurfaceLayers' (2 ~ 5)
- set 'finalLayerThickness' properly (0.3 ~ 1.0)
- set 'minThickness' properly (0.002 or smaller)

I attached sHMDict and log file.
Could you help me to solve this problem?
Thanks in advance
Attached Files
File Type: txt log.txt (68.8 KB, 2 views)
File Type: txt snappyHexMeshDict.txt (8.3 KB, 3 views)
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Old   August 14, 2019, 04:28
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Hyeoksu Lee
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I found what was wrong!

Since I didn't designated the boundary types, the boundary type was set to 'empty' automatically. So the layer addition couldn't be done.
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