|January 26, 2012, 19:24||
mesh quality problems: maximum skewness larger than 0.98
Join Date: Jan 2011
Posts: 10Rep Power: 6
Hi there. I am simulating a numerical wave tank with a chamber in it. I build the mesh with DM meshing, but when I run it in FLUENT, there is a warning
maximum cell skewness exceed 0.98
what is the problem that causes the warning?
besides this warning, there are two other things, the maximum cell squish is 0.9655 and the maximum aspect ratio is 256.198
does it mean the mesh quality is low?
how can I deal with these problems?
Last edited by cth_yao; January 26, 2012 at 19:25. Reason: specify my question
|January 27, 2012, 06:03||
Join Date: Mar 2009
Posts: 2,919Rep Power: 30
check your mesh quality, display worst elements, and fix problems.
You need to go back on your mesher for that
In memory of my friend Hervé: CFD engineer & freerider
Last edited by -mAx-; January 27, 2012 at 06:22.
|January 27, 2012, 06:05||
Join Date: Jun 2011
Posts: 108Rep Power: 5
Mesh skewness is high if you are using unstructured mesh. But generally, it should be less than 0.85 for tetrahedral cells.
Even a few cells with high skewness can cause trouble in convergence and may even lead to divergence.
|January 27, 2012, 06:50||
Join Date: Nov 2009
Posts: 13Rep Power: 7
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