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p'equation boundary conditions

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Old   August 24, 2003, 14:52
Default p'equation boundary conditions
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bb.
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If we prescribed velocity at boundary we don't need special treatment for pressure-correction equation (dp'/dn=0) but I had problem when I define pressure constant boundary condition (p=constant, p'=0) , I need special treatment for central coefficient of p' equation at boundary nodes?
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Old   September 1, 2003, 23:21
Default Re: p'equation boundary conditions
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kenn
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on the wall, dp/dn is not zero at all. it's something like

suppose on the right wall

dp/dn = 1/Re d^2 u/d x^2

when Re is high, the R.H.S. reduces to zero.
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