PressureInlet

christian · February 13, 2008, 10:35

Why is a velocity field asked for when prescribing a pressure inlet? What is it for?

Best regards,
Christian Svensson

lillberg · February 13, 2008, 15:03

Hmm... how do you define your pressure inlet condition?

When pressureInlet is chosen in FoamX the resulting BC for U is pressureInletVelocity which calculates U from phi on the boundary, and fixedValue for p.

Anyway, you normally solve for U and p meaning that you'll need BC's for both on all boundaries, OF doesn't assume anything.

Hope it's a bit clearer.

//Eric

February 13, 2008, 10:35	Why is a velocity field asked	#1
christian Member Christian Lindbäck Join Date: Mar 2009 Posts: 55 Rep Power: 17	Why is a velocity field asked for when prescribing a pressure inlet? What is it for? Best regards, Christian Svensson

February 13, 2008, 15:03	Hmm... how do you define your	#2
lillberg Member Eric Lillberg Join Date: Mar 2009 Location: Stockholm Posts: 80 Rep Power: 17	Hmm... how do you define your pressure inlet condition? When pressureInlet is chosen in FoamX the resulting BC for U is pressureInletVelocity which calculates U from phi on the boundary, and fixedValue for p. Anyway, you normally solve for U and p meaning that you'll need BC's for both on all boundaries, OF doesn't assume anything. Hope it's a bit clearer. //Eric

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