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Old   November 18, 2005, 05:07
Default boundary conditions
  #1
subhash
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hi,

I KNOW FLOW RATE and PRESSURE DROP(BETWEEN INLET AND OUTLET) Which B.Cs. should i select. the problem is of pipe flow with one inlet and one outlet.

Thanks in advance

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Old   November 18, 2005, 05:22
Default Re: boundary conditions
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Lelia
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There's a relation ship between the flow rate and the pressure drop, so i think that in both way you should have the same results! the easiest way i think that's to use the pressure boundries for both inlet and outlet of the pipe.
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Old   November 21, 2005, 07:16
Default Re: boundary conditions
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John Luo
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Both are fine and should give you same results upon convergence. But fixed mass flow rate will normally converge faster.
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