Negative Pressure -- CFD Online Discussion Forums

October 6, 2005, 00:48	Negative Pressure	#1
S Christopher Guest Posts: n/a	I am simulating the entire pump model using CFX. In post processing results, there is a negative pressure around -4 bar (approx.). But Head delivered by the pump is correct. The Inlet condition are Inlet dynamic pressure and outlet are velocity. Reference pressure is atmospheric. But still there is negative pressure. please give the reason? If i want to know to exact magnitude of staic or absolute pressure near the blade surface, can i use the same value or some other method is used to find, if so please inform. Since all pressure are measured from zero absolute pressure.

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