TY - GEN
T1 - Experimental and numerical study of cavitation breakdown in a centrifugal pump
AU - Nohmi, Motohiko
AU - Iga, Yuka
AU - Goto, Akira
AU - Ikohagi, Toshiaki
PY - 2003
Y1 - 2003
N2 - A low specific speed centrifugal pump was constructed to measure cavitation flow characteristics. Pressure distribution over blade surfaces and wall static pressure were measured dynamically and cavitation behavior were photographed by using high speed video and a digital camera. Cavitation flow inside the impeller was computed by commercial CFD code CFX-TASCflow. Head drop characteristics were measured in detail and compared to CFD results. In the case of the best efficiency point flow, bubble cavitation increases along the suction side while decreasing NPSH. When bubble cavitation reaches the throat, another cavity appears on pressure side and the head breakdown occurs steeply. At the high flow rate, cavitation bubbles appear incipiently at the throat on pressure side and head drops gradually. At best efficiency point flow, cavitation phenomena are well captured by CFD.
AB - A low specific speed centrifugal pump was constructed to measure cavitation flow characteristics. Pressure distribution over blade surfaces and wall static pressure were measured dynamically and cavitation behavior were photographed by using high speed video and a digital camera. Cavitation flow inside the impeller was computed by commercial CFD code CFX-TASCflow. Head drop characteristics were measured in detail and compared to CFD results. In the case of the best efficiency point flow, bubble cavitation increases along the suction side while decreasing NPSH. When bubble cavitation reaches the throat, another cavity appears on pressure side and the head breakdown occurs steeply. At the high flow rate, cavitation bubbles appear incipiently at the throat on pressure side and head drops gradually. At best efficiency point flow, cavitation phenomena are well captured by CFD.
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U2 - 10.1115/fedsm2003-45409
DO - 10.1115/fedsm2003-45409
M3 - Conference contribution
AN - SCOPUS:0347534198
SN - 0791836967
SN - 9780791836965
T3 - Proceedings of the ASME/JSME Joint Fluids Engineering Conference
SP - 1251
EP - 1258
BT - Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference
A2 - Ogut, A.
A2 - Tsuji, Y.
A2 - Kawahashi, M.
PB - American Society of Mechanical Engineers
T2 - 4th ASME/JSME Joint Fluids Engineering Conference
Y2 - 6 July 2003 through 10 July 2003
ER -