Static pressure boundary condition at outlet -- CFD Online Discussion Forums

March 28, 2011, 16:53	Static pressure boundary condition at outlet	#1
jennz New Member jennz Join Date: Mar 2011 Posts: 2 Rep Power: 0	I have a simple flow problem with constant flow velocity at the inlet and static pressure (I use 0) at the outlet. However, when I monitor results in CFX-post, the pressure at the outlet is far from 0. It ranges from -30Pa to +1MPa. The average or area-average pressure is not 0 either. Does anyone knows why? One thing I notice is CFX imposed a wall boundary condition on 60% of the outlet to prevent inwards flow. Does this cause the incorrect pressure condition? Appreciate any answer I may get!

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