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November 3, 2009, 02:00 |
Much Difference on my airfoil simulation
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#1 |
Senior Member
teguh hady
Join Date: Aug 2009
Location: Saga, Japan
Posts: 222
Rep Power: 17 |
Hi All,
I'm simulating 2 kind of turbulance model on an airfoil, i.e K Epsilon & SST. but there is much differences. I dont know where is my fault!! Help me out this problem, Thanks teguhtf P.S. I attach the report and figure of each turbulence condition Last edited by teguhtf; November 3, 2009 at 02:49. |
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November 16, 2009, 12:21 |
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#2 |
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Felipe Gutiérrez Donoso
Join Date: Mar 2009
Posts: 31
Rep Power: 17 |
It doesn´t look good to me, how are the residuals??
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November 21, 2009, 20:04 |
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#3 |
Senior Member
teguh hady
Join Date: Aug 2009
Location: Saga, Japan
Posts: 222
Rep Power: 17 |
Hi Figd84
Thanks for your reply. my simulation has converged on iteration. Btw, How i can see convergence on residual graph?? Because I think if the solution has converged, i ignore the residual. Thank You teguh PS. I'll Post my residual graph later
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November 23, 2009, 00:51 |
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#4 |
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Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
From your pictures I can't see any outlet (I see only a blue edge which means inlet).
If I am right, then it might be your error, since you don't have mass conservation
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December 4, 2009, 06:43 |
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#5 |
Senior Member
teguh hady
Join Date: Aug 2009
Location: Saga, Japan
Posts: 222
Rep Power: 17 |
I'm sorry to be late on the reply. I've focused on my fabrication on the turbine for a while.
Yes, You are right. I use wrong BC.^^ I've tried some of type of BC and take a note on it. Now, I'm still working by up & down wall (free slip) and the inlet is velocity inlet & outlet is press outlet. thank's teguhtf
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