A study of progpagating speed of rotating cavitation based on numerical analysis

Yuka Iga, Yoshiki Yoshida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this study, by reproducing flowfields of several kinds of cavitation instabilities by numerical simulation of unsteady cavitation in three blades cyclic cascade, occurrence mechanism of rotating cavitations in cascade are attempted to clarify. "The order of appearance of rotating cavitations" and "the discontinuity of the propagation speed at the transition" are still not clarified. From the present study, it is found that they can be explained by existence of latent rotating-stall and decrease of frequency of cavity break-off with development of the cavity. And our numerical results agree with the predicted rotating speed of rotating cavitation and break-off frequency of cavitation. Additionally, difference of sub-synchronous rotating cavitation and rotating-stall cavitation, they are both sub-synchronous phenomenon but have different propagation speed, is explained according to their occurrence mechanism.

Original languageEnglish
Title of host publicationProceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009
Pages399-405
Number of pages7
EditionPART A
DOIs
Publication statusPublished - 2009 Dec 1
Event2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009 - Vail, CO, United States
Duration: 2009 Aug 22009 Aug 6

Publication series

NameProceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009
NumberPART A
Volume1

Other

Other2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009
CountryUnited States
CityVail, CO
Period09/8/209/8/6

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

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    Iga, Y., & Yoshida, Y. (2009). A study of progpagating speed of rotating cavitation based on numerical analysis. In Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009 (PART A ed., pp. 399-405). (Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009; Vol. 1, No. PART A). https://doi.org/10.1115/FEDSM2009-78411