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Much Difference on my airfoil simulation

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Old   November 3, 2009, 03:00
Question Much Difference on my airfoil simulation
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teguh hady
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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
Attached Images
File Type: jpg AIRFOIL SST.JPG (89.1 KB, 39 views)
File Type: jpg AIRFOIL K EPSILON.JPG (86.6 KB, 29 views)
Attached Files
File Type: txt SST.txt (18.6 KB, 13 views)
File Type: txt K EPSILON.txt (18.8 KB, 9 views)

Last edited by teguhtf; November 3, 2009 at 03:49.
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Old   November 16, 2009, 13:21
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Felipe Gutiérrez Donoso
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It doesn´t look good to me, how are the residuals??
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Old   November 21, 2009, 21:04
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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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Old   November 23, 2009, 01:51
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Maxime Perelli
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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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Old   December 4, 2009, 07:43
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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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