Theoretical analysis of unsteady fluid forces working on inducer blades under rotating cavitation

Satoshi Watanabe, Hironori Horiguchi, Akinori Furukawa, Junichiro Fukutomi, Yoshinobu Tsujimoto

Research output: Contribution to journalArticle

Abstract

Rotating cavitation is one of the flow instabilities associated with cavitation, which has been a severe problem for the development of turbopumps of liquid rocket engines because of causing the destructive super-synchronous shaft vibration. Recently, it is argued that rotating cavitation might also induce large repetitive stresses on blades in accordance with the unsteady pressure due to the significant change of cavitating regions. This paper describes about the theoretical prediction of unsteady blade forces working on the cavitating inducer under rotating cavitation. Unsteady pressure distributions and a lift force for a 2-dimensitional flat plate cascade under rotating cavitation are calculated by the linearized free streamline theory based on the unsteady closed cavity model and singularity method.

Original languageEnglish
Pages (from-to)688-695
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume67
Issue number655
DOIs
Publication statusPublished - Mar 2001

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cavitation flow
blades
Cavitation
Turbomachine blades
Fluids
fluids
turbine pumps
rocket engines
Cascades (fluid mechanics)
Rocket engines
flat plates
pressure distribution
Pressure distribution
cascades
vibration
cavities
Liquids
liquids
predictions

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Theoretical analysis of unsteady fluid forces working on inducer blades under rotating cavitation. / Watanabe, Satoshi; Horiguchi, Hironori; Furukawa, Akinori; Fukutomi, Junichiro; Tsujimoto, Yoshinobu.

In: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 67, No. 655, 03.2001, p. 688-695.

Research output: Contribution to journalArticle

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