Dynamic Mesh Failing
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I have an issue with my dynamic mesh in fluent. I have a thin wall (~0.10mm) with one surface moving and one stationary. When the one wall moves, I only get ~0.3mm worth of movement before the error:
Error: Update-Dynamic-Mesh failed. Negative cell volume detected. When previewing the mesh motion it looks like the elements are only stretching but they are not remeshing. My dynamic mesh settings are: Smoothing and Remeshing checked. Smoothing - Spring/Laplace/BL Spring constant factor - 0.1 Convergence tolerance - 0.0001 Number of iterations - 100 Elements - all Laplace node relaxation - 1 Remeshing methods - 2.5D only sizing functions checked with 1 resolution, 344 variation, 0.7 rate parameters: min length scale (m) - 0.000142 max length scale (m) - 0.098486 max cell skewness 0.95 max face skewness 0.95 size remeshing interval - 2 I think it's a problem with skewedness as if I check mesh info the skewedness is already at 0.999. I've already tried remeshing with a skewedness target of 0.4 but that did not positively affect the results. Are there any settings I could change to avoid this error? A quick snapshot of the mesh is attached. |
Any advice?
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