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[snappyHexMesh] Rhino surface problem in SnappyHexMesh

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Old   August 10, 2016, 11:22
Default Rhino surface problem in SnappyHexMesh
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Diana Hurtado B.
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Hi everybody!

I'm trying to run a resistance simulation on OpenFOAM 3.0x using my own Hull generated on Rhinoceros. I followed the tutorial to export it to .STL format, but at the time to run snappyHexMesh I have this problem:

...
Scaling iteration 6
Moving mesh using displacement scaling : min:0 max:1
Checking faces in error :
non-orthogonality > 70 degrees : 856
faces with face pyramid volume < 1e-13 : 0
faces with face-decomposition tet quality < 1e-30 : 0
faces with concavity > 80 degrees : 0
faces with skewness > 4 (internal) or 20 (boundary) : 0
faces with interpolation weights (0..1) < 0.05 : 0
faces with volume ratio of neighbour cells < 0.01 : 0
faces with face twist < 0.05 : 0
faces on cells with determinant < 0.001 : 0
Successfully moved mesh

Patch points smoothed in = 14.31 s



Morph iteration 0
-----------------
Calculating patchDisplacement as distance to nearest surface point ...
--> FOAM Warning :
From function autoSnapDriver::calcNearestSurface(..)
in file autoHexMesh/autoHexMeshDriver/autoSnapDriver.C at line 1759
For point:125 coordinate1.44804 -0.0688446 0.0565973) did not find any surface within:0.0104167 metre.
--> FOAM Warning :
From function autoSnapDriver::calcNearestSurface(..)
in file autoHexMesh/autoHexMeshDriver/autoSnapDriver.C at line 1759
For point:132 coordinate1 -0.0789813 0.0270923) did not find any surface within:0.0104167 metre.
...

I have tried a lot of ideas and don't know how to solve it.

Any idea?

This is the link of Hull Geometry: https://www.dropbox.com/s/gh6kr41fpn...nL.stl.gz?dl=0


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Old   August 12, 2016, 15:45
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Tobias Holzmann
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Dear Diana,

this STL is not "mesh-able".
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