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Effect of Leading Edge Sweep on Cavitation Performance of Two-Bladed Flat Plate Inducer

[+] Author Affiliations
Takaki Igoshi, Yuki Uchinono, Emosi Koroitamana, Koichi Ishizaka, Satoshi Watanabe, Akinori Furukawa

Kyushu University, Fukuoka, Japan

Paper No. AJK2011-06055, pp. 289-296; 8 pages
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D
  • Hamamatsu, Japan, July 24–29, 2011
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4440-3
  • Copyright © 2011 by JSME


The installation of inducer upstream of main impeller is an effective method to improve the suction performance of turbopump. However, various types of cavitation instabilities are known to occur even at the designed flow rate as well as in the partial flow rate range. In the present study, we focus on the leading edge sweep of inducer and investigate its effect on the suction performance as well as on the onset of cavitation surge phenomenon. Flow measurements including casing wall pressure measurements, high-speed video observations, and limiting streamline observations are carried out, and discussions will be made based on those results about the influence of backward leading edge sweep on the internal flow of the inducer as well as its relation to the cavitation performance.

Copyright © 2011 by JSME



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