Numerical analysis of 2-D unsteady cavitating flow around hydrofoils in cascade

Yuka Iga; Motohiko Nohmi; Akira Goto; Byeong Rog Shin; Toshiaki Ikohagi

doi:10.1299/kikaib.68.368

Numerical analysis of 2-D unsteady cavitating flow around hydrofoils in cascade

Yuka Iga, Motohiko Nohmi, Akira Goto, Byeong Rog Shin, Toshiaki Ikohagi

Complex Flow Research Division

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

2-D unsteady cavitating flows around hydrofoils are numerically calculated, and the performance characteristics of hydrofoils in cascade are investigated under several cavitating flow conditions. A locally homogeneous model of compressible gas-liquid two-phase media is applied to simulate above cavitating flows using TVD-MacCormack's numerical method. The present method permits us to treat the whole cavitating and noncavitating unsteady flows field and fluid transients without any remeshing procedures, though it gives somewhat diffusive cavity surface compared with two fluids cavity flow model. Some calculated results are obtained, and discussed on the validity of the present method and its applicability to wide range of cavitating cascade flows.

Original language	English
Pages (from-to)	368-374
Number of pages	7
Journal	Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume	68
Issue number	666
DOIs	https://doi.org/10.1299/kikaib.68.368
Publication status	Published - 2002 Feb

Keywords

Cascade
Cavitation
Compressible Navier-Stokes equation
Numerical analysis
Two-phase flow

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering

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Iga, Y., Nohmi, M., Goto, A., Shin, B. R., & Ikohagi, T. (2002). Numerical analysis of 2-D unsteady cavitating flow around hydrofoils in cascade. Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 68(666), 368-374. https://doi.org/10.1299/kikaib.68.368

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abstract = "2-D unsteady cavitating flows around hydrofoils are numerically calculated, and the performance characteristics of hydrofoils in cascade are investigated under several cavitating flow conditions. A locally homogeneous model of compressible gas-liquid two-phase media is applied to simulate above cavitating flows using TVD-MacCormack's numerical method. The present method permits us to treat the whole cavitating and noncavitating unsteady flows field and fluid transients without any remeshing procedures, though it gives somewhat diffusive cavity surface compared with two fluids cavity flow model. Some calculated results are obtained, and discussed on the validity of the present method and its applicability to wide range of cavitating cascade flows.",

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AB - 2-D unsteady cavitating flows around hydrofoils are numerically calculated, and the performance characteristics of hydrofoils in cascade are investigated under several cavitating flow conditions. A locally homogeneous model of compressible gas-liquid two-phase media is applied to simulate above cavitating flows using TVD-MacCormack's numerical method. The present method permits us to treat the whole cavitating and noncavitating unsteady flows field and fluid transients without any remeshing procedures, though it gives somewhat diffusive cavity surface compared with two fluids cavity flow model. Some calculated results are obtained, and discussed on the validity of the present method and its applicability to wide range of cavitating cascade flows.

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