Observations of oscillating cavitation of an inducer

Yoshinobu Tsujimoto, Yasukazu Maekawa, Yoshiki Yoshida, Satoshi Watanabe, Tomoyuki Hashimoto

Research output: Contribution to journalArticlepeer-review

197 Citations (Scopus)


Oscillating cavitation of an inducer was observed through unsteady inlet pressure measurements and by use of high speed video picture, covering a wide range of flow coefficient and cavitation number. One of the purposes of the study is to identify a mode of rotating cavitation predicted by a linear analysis, and the other is to obtain a general view of oscillating cavitation. The number of rotating cavitation cells and their propagation velocity were carefully determined from the phase difference of pressure fluctuations at various circumferential locations. Various kinds of oscillating cavitation were observed: rotating cavitation rotating faster/slower than impeller rotation, cavitation in backflow vortices, and surge mode oscillations. Effects of inlet and outlet (effective) pipelength were also studied.

Original languageEnglish
Pages (from-to)775-781
Number of pages7
JournalJournal of Fluids Engineering, Transactions of the ASME
Issue number4
Publication statusPublished - Dec 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering


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