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k-omega turbulence model: 1 vs 2 order solution

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Old   August 31, 2009, 14:57
Default k-omega turbulence model: 1 vs 2 order solution
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I am modelling film cooling on a blade leading edge.
I got a good solution with ke realizable turbulence model. Then I refined the grid so that y+ is less than 5 and I set the kw SST turbulence model.
I can get convergence only with the first order scheme solution in the dissipation rate. When I shift to the second order solution, omega residuals jump and suffer for high oscillation.
Do you have any suggestion to fix the problem?

Thans in advance
Good work to everybody
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