HOW to calculate the NPSHR of centrifugal pump

water pump · August 2, 2010, 09:49

Hi every one

I have calculated NPSHR for 20 sets centrifugal pumps by using cfx 12, but the predicted results are not satisfied when compared with experimental value.
I want to kown if anyone have calculated the NPSHR of centrifugal pump.how about the predicted results?

and, how to setup the cfx pre for predicting NPSHR?

THANK YOU very much.

water pump

ghorrocks · August 2, 2010, 18:40

Have you read the best practises guide for pumps? It is installed as part of the documentation. It has a lot of good hints on pump simulations.

water pump · August 2, 2010, 19:59

HI ghorrocks

thank you for your reply.
I have read the documents about the pump, the predicted head and efficiency of centrifugal pumps are well,but the NPSHr of pumps are bad.so I want to kown the the others predicted results and set process in cfx pre.

wang y

August 2, 2010, 09:49	HOW to calculate the NPSHR of centrifugal pump	#1
water pump New Member wang y Join Date: Aug 2010 Posts: 2 Rep Power: 0	Hi every one I have calculated NPSHR for 20 sets centrifugal pumps by using cfx 12, but the predicted results are not satisfied when compared with experimental value. I want to kown if anyone have calculated the NPSHR of centrifugal pump.how about the predicted results? and, how to setup the cfx pre for predicting NPSHR? THANK YOU very much. water pump

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August 2, 2010, 18:40		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Have you read the best practises guide for pumps? It is installed as part of the documentation. It has a lot of good hints on pump simulations.

August 2, 2010, 19:59		#3
water pump New Member wang y Join Date: Aug 2010 Posts: 2 Rep Power: 0	HI ghorrocks thank you for your reply. I have read the documents about the pump, the predicted head and efficiency of centrifugal pumps are well,but the NPSHr of pumps are bad.so I want to kown the the others predicted results and set process in cfx pre. wang y