TY - JOUR
T1 - Experimental investigation on suction performance and cavitation instabilities of turbopumps with two different inducers
AU - Morii, T.
AU - Tanaka, Y.
AU - Watanabe, S.
AU - Ohashi, S.
AU - Matsunaga, Y.
N1 - Publisher Copyright:
© 2019 Published under licence by IOP Publishing Ltd.
PY - 2019/3/28
Y1 - 2019/3/28
N2 - In the present study, the suction performance and the cavitation instabilities in turbo-pumps with two different inducers designed with different design incidence angle are experimentally investigated in the wide range of operating flow rate. Compared to the Inducer A, Inducer B is designed with larger incidence angle, therefore it has slightly larger inlet and outlet angles. The identical centrifugal impeller is used as a main impeller. As a result, the total head of pump with inducer B is confirmed to be larger than that with inducer B especially at large flow rates, while the shaft power is almost the same, resulting in the better efficiency with the inducer B. The suction performance is better with inducer B at large flow rates. Two kinds of instabilities, the cavitating whirling vortex and the surges are mainly observed for the both inducers, but they are limited at low flow rates. The occurrence ranges of these cavitation instabilities are wider with inducer B.
AB - In the present study, the suction performance and the cavitation instabilities in turbo-pumps with two different inducers designed with different design incidence angle are experimentally investigated in the wide range of operating flow rate. Compared to the Inducer A, Inducer B is designed with larger incidence angle, therefore it has slightly larger inlet and outlet angles. The identical centrifugal impeller is used as a main impeller. As a result, the total head of pump with inducer B is confirmed to be larger than that with inducer B especially at large flow rates, while the shaft power is almost the same, resulting in the better efficiency with the inducer B. The suction performance is better with inducer B at large flow rates. Two kinds of instabilities, the cavitating whirling vortex and the surges are mainly observed for the both inducers, but they are limited at low flow rates. The occurrence ranges of these cavitation instabilities are wider with inducer B.
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U2 - 10.1088/1755-1315/240/3/032041
DO - 10.1088/1755-1315/240/3/032041
M3 - Conference article
AN - SCOPUS:85063771422
SN - 1755-1307
VL - 240
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
IS - 3
M1 - 032041
T2 - 29th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2018
Y2 - 16 September 2018 through 21 September 2018
ER -