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Old   September 12, 2013, 13:21
Default Convergence problem Fluent refined mesh
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diego
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[I've done a cylinder of 400m. I've done a mesh of 7 cm t-grid and my problem converged. Now I've scaled the cylinder using a ratio 1 : 20 but there are residual oscillations. These are shown in the image ATTACH]25320[/ATTACH].
I'm using k epsilon standard and my problem is steady. So how can I resolve this problem?
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Old   September 14, 2013, 16:35
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Quote:
Originally Posted by costy View Post
Now I've scaled the cylinder using a ratio 1 : 20
Make sure your scaling is isotropic (equal ratio in all directions), or you may have created bad elements.

Also, ensure you scaled before setting up the rest of your case so that your boundary conditions don't get mismatched (they shouldn't, but the Fluent documentation recommends it).
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Last edited by jdrch; September 15, 2013 at 13:50.
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Old   September 15, 2013, 06:24
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thanks a lot or your help
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Old   September 15, 2013, 13:57
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No problem!
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