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Convergence Problems in a T mixer

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Old   June 13, 2011, 12:48
Default Convergence Problems in a T mixer
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Nuno Gomes
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Hello All

I am simulating a mixing T reactor. I did the mesh with quadratic prismas, and the injectors(Top of the T) i use triangular primas and a tetrahedric. The skewness looks fine, under 0,85 for the differents case. I am trying a Reynolds number for 75, 150 and 300.

I doing, first simulations, with lower order discretizations (standard and 1st) with a constant velocty inlet. After i increase the order for Body(Because presto! dont converge) and Quick.

After that i try it with a parabolic velocity inlet UDF equation. For lower schemes its work fine but for higher schemes they converge but the residual ir higher(10e-2) compare to the first case(10e-4).

Any one can give clues or hints to resolve my problema....need any more information about my case?

Thank for your replys
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Old   June 14, 2011, 06:10
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Nuno Gomes
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Any one?! Plz...
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