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Old   May 13, 2013, 09:48
Question Low Mach rhoCentralFoam
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Ali
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Dear all
Is there anybody who can help me that how can I setup the rhoCenteralFoam solver for low speed (or low Ma, or low Re) flows?
the geometry consists of a simple parallel plate at micro scale.
My solutions are wrong (for example a reverse flow appears along he channel) .
It seems the solver did not solves for rho (it prints No iteration = 0 for rho, rhoUx and rhoUy.
how can I fixed it?
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Old   May 23, 2013, 04:11
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Hi Ali
it solves continuity equation to obtain rho by "diagonal solver" so rho residuals are zero means exact solution as other compressible solvers like rhoPimpleFoam.
that trouble with reversed flow is related to bad BC in outlet.
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Old   May 25, 2013, 08:49
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Dear Ehsan

Thanks for your kind informations.
Yes the problem was with the BC as well as IC which is solved now.
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Old   May 25, 2013, 09:57
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your welcome
I'm also intersted in micro scales.
which university are you in?
could you send me your case?
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