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Old   September 2, 2007, 01:22
Default Skewed mesh simulations
Christopher Peacock
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I could really use some advice on running simulations on a mesh that features skewed elements. I have ~3million elements in a tetrahedral mesh, of which 15 are highly skewed (>0.98). I can't run a simulation without converting these to polyhedra. But the simulation continually breaks down after ~30iterations and I have serious doubts about the solution accuracy. I am now running a laminar flow at reduced under-relaxation factor and courant number just to get anywhere with the simulation. I have serious doubts about the this approach as well.

Cheers, any help would be appreciated!

Chris Peacock
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Old   September 3, 2007, 01:43
Default Re: Skewed mesh simulations
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forget your solution with such high skewed cells. Try to get max high skewed cells around 0.9 (max. 0.95)
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Old   September 3, 2007, 07:06
Default Re: Skewed mesh simulations
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Try adaption of grid equiangle skewness and set maximum value.
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