One-dimensional analysis method for cavitation instabilities of a rotating machinery

Satoshi Kawasaki, Masaharu Uchiumi, Takashi Shimura, Yuka Iga

Research output: Contribution to conferencePaperpeer-review

Abstract

Rotating cavitation is an important problem, which makes it difficult to design reliable rotating machines. In the present study, a simple analysis method that tried to evaluate the cavitation instabilities of a rotating machinery by using one-dimensional system analysis software was attempted. In this method, cavitation compliance and mass flow gain factor are distributed in each flow path of the inducer. Analysis results show that cavitation instabilities, including rotating phenomena, exist. With the evolved analysis model, effects of various parameters on the eigenvalues of the system were investigated. Analysis results agreed with inducer test results qualitatively. Furthermore, by the analysis considered whirl motion of the rotor, effects of it on cavitation instabilities were investigated.

Original languageEnglish
Publication statusPublished - 2019 Jan 1
Event16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016 - Honolulu, United States
Duration: 2016 Apr 102016 Apr 15

Conference

Conference16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016
CountryUnited States
CityHonolulu
Period16/4/1016/4/15

Keywords

  • 1D-analysis
  • Cavitation
  • Cavitation surge
  • Eigenvalue - Rotating cavitation
  • Inducer
  • Rotor whirl
  • Sub-synchronous
  • Super-synchronous

ASJC Scopus subject areas

  • Mechanical Engineering

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