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LES and DES Convergence

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Old   September 28, 2007, 09:59
Default LES and DES Convergence
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Jim
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I'm finding it difficult to get converged results when using LES and DES, my lift and drag are very unstable over the whole simulation. How important is it to obtain convergence with these methods compared to RANS? I simulate flow around a vertical square cylinder at moderate to high Re with Fluent.

Any suggestions and thoughts are welcome.

Jim
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Old   September 28, 2007, 11:12
Default Re: LES and DES Convergence
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Praveen. C
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This flow would be unsteady. So the forces oscillate in time.
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Old   September 28, 2007, 15:27
Default Re: LES and DES Convergence
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jojo
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Do the statistcs. The means must converge.
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