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December 29, 2011, 11:42 |
Yes-No question about poiseuille flow
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#1 |
Member
Amin Shariat KHah
Join Date: Apr 2011
Location: Shiraz
Posts: 86
Rep Power: 15 |
Dear Foamers,
I have read every posts about pressure driven flow but finally I need some one only tell me is it right my conclusion about pressure boundary condition in poiseuille flow, or not: if we have a pressure driven flow and we don't know about velocity but we know pressure boundary condition, we use velocity (U/0) in this form: inlet : type pressureInletVelocity value uniform(0 0 0 ) ; outlet: type zerogradient and pressure as below: inlet: type fixedValue; value uniform 1; (we assume 1 is value of pressure at inlet) outlet type fixedValue; value uniform 0; And another queation, is this pressure value, real or divided by density? |
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Tags |
boundary condition, poiseuille flow, pressure driven |
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