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Inviscid flow on blade does not converge, why?? |
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September 8, 2010, 15:49 |
Inviscid flow on blade does not converge, why??
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#1 |
Member
Arash
Join Date: Dec 2009
Location: Denmark
Posts: 37
Rep Power: 16 |
Dear all,
I simulate a stationary blade in inviscid flow but the solution does not converge. the problem is on Continuity residual because it is not going lower than 10e-2. do you have any Idea or suggestion? thanks in advance |
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September 10, 2010, 09:53 |
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#2 |
Member
Arash
Join Date: Dec 2009
Location: Denmark
Posts: 37
Rep Power: 16 |
Also I think my mesh Quality is fine enough (Maximum Equiangle Skewness is 0.86) and I used POINTWISE in order to mesh my geometry.
in fluent, I tried all of the numerical scheme such as first order upwind scheme or Quick Sheme .... :-( |
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September 14, 2010, 01:43 |
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#3 |
New Member
srr
Join Date: Feb 2010
Posts: 25
Rep Power: 16 |
All the time I have convergence problems I check the wall y+, it usually shows the cells where the problem exists (where it is really high y+ values), so I introduce a mesh density it that point to improve quality. Your skewness is good, but there might be a problem with aspect ratio, squish, ....
I hope this help you |
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