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how to decrease Uy residuals?

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Old   March 19, 2013, 11:23
Default how to decrease Uy residuals?
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Ehsan
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in Residuals I attached Uy are about 10 order bigger than others.
how can I reduce it?
my problem is unsteady and compressible in a long tube with 7cm length and 4mm height.
any help and advice?
thanks.
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Old   March 20, 2013, 10:45
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Fumiya Nozaki
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Is there a symmetryPlane boundary in your case?

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Old   March 20, 2013, 11:58
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hi dear Fumiya
No.there isn't any symmetryplane in my case.
Its a simple 2D tube with two walls at top and bottom and one inflow and one outflow at sides.
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Old   March 21, 2013, 13:21
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any advice?
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Old   March 24, 2013, 06:27
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suggestions and experiences are appreciated
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Old   March 29, 2013, 02:08
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any help,advice,hint or only opinion?!
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Old   April 1, 2013, 03:23
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does mesh resolution must have effect on residuals of U? I didn't received an effect.why?
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