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-   -   Skewed mesh simulations (http://www.cfd-online.com/Forums/fluent/45903-skewed-mesh-simulations.html)

Christopher Peacock September 2, 2007 02:22

Skewed mesh simulations
 
Hi,

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

mAx September 3, 2007 02:43

Re: Skewed mesh simulations
 
forget your solution with such high skewed cells. Try to get max high skewed cells around 0.9 (max. 0.95)

AAA September 3, 2007 08:06

Re: Skewed mesh simulations
 
Try adaption of grid equiangle skewness and set maximum value.


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