Skewness
 

hi, I have a 3D model that have high skewness values. However whatever I do for lowering skewness values didn't work. The worst element has a skewness of 0.82. What should the limits of skewness be for analyzing a turbulent flow of air around a body? is 0.82 anyway ok? Thanks Regards Taskin

Re: Skewness
 

I have read that maximum skewness value should be around 0.5.

Re: Skewness
 

then I should decrease it in some way thanks Regards Taskin

Re: Skewness
 

what? the max skewness should be 0.5? in my mesh ,it often exceeds 0.9. because i use dynamic mesh, sometimes over 0.95, and there will be a warning. so, i should remash it?

Re: Skewness
 

Yes, handou is right. The limit should be anyway 0.9 not to have excessive skewness. Luca

Re: Skewness
 

From my experience, try to stay under 0.75.

Up to 0.85 is acceptable, but not good. Above 0.98 - and Fluent Grid check will fail.

Also when you use such skew cells, it makes sense to go to 2nd order methods for density, momentum etc.