Transient model pattern changing point
I found something interesting in my simulation pattern:
As I use an element size >=6e-5 and < 6e-5, the simulation patterns were completely different:
However, within their own group, simulation patterns were the same:
element size 5.5e-6 vs 5.75e-6
I am using the same original fluent file and only changing the mesh quality to export, all the settings should be the same. So I wonder if that's a problem associated with the mesh quality such as mesh orthogonality? would a change in bias factor in y-direction cause this issue?
cells with orthogonality>0.75 (element size 6e-6)
cells with orthogonality>0.75 (element size 5.75e-6)
the images of cells with skewness <0.8 and aspect ratio<=2 are the same with different element size.
Just wondering if anyone knows what could cause the difference in the simulation patterns?