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Old   May 16, 2013, 02:18
Default Scaling leads to FPE
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Onno
Join Date: Jan 2012
Location: Germany
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Hello everyone,

I've run into a strange problem and I'm hoping someone can help me out. I want to run a simulation using a mesh generated in Gridgen. For the conversion I use fluentMeshToFoam -scale 0.001 since I want to convert it from mm to m. When I start the simulation I get a SIG_FPE as soon as the pressure is calculated for the first time. Now the fun part: It only happens, when I scale the mesh, without scaling it runs fine at least for the first few iterations.

checkMesh output:
Checking geometry...
Overall domain bounding box (-0.85 -0.85 -0.327122) (0.85 0.85 1.3724)
Mesh (non-empty, non-wedge) directions (1 1 1)
Mesh (non-empty) directions (1 1 1)
Boundary openness (-4.51114e-18 -1.79373e-17 1.42078e-15) OK.
Max cell openness = 3.03263e-16 OK.
Max aspect ratio = 7.79845 OK.
Minimum face area = 5.55095e-07. Maximum face area = 0.00120582. Face area magnitudes OK.
Min volume = 2.75958e-10. Max volume = 1.47751e-05. Total volume = 3.55773. Cell volumes OK.
Mesh non-orthogonality Max: 62.1092 average: 19.8124
Non-orthogonality check OK.
Face pyramids OK.
Max skewness = 0.876396 OK.
Coupled point location match (average 0) OK.

Any ideas? My next step would be to set mm as unit for length in the controlDict and see what happens.

Greetings

Kaskade
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