Centrifugal Pump Cavitation problem or not. -- CFD Online Discussion Forums

November 11, 2011, 03:25		#5
Graham81 Member Join Date: Dec 2009 Posts: 57 Rep Power: 16	1) Although the top 2 pictures look good, I cant judge any recirculating areas from that. Please make a cross sectional plane with projected relative velocities. 2) The suction side caviation zone (is that vapor fraction >0.5 plotted?) doesnt extend up to the shroud where tip speed is highest. Do you have significantly different leading edge blade angles at hub and shroud? 3) If your experimental pump is running unstable and your simulation is predicting cavitation, how realistic is it to get a matching QH?

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