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TECHNICAL PAPERS

A Theoretical Analysis of Alternate Blade Cavitation in Inducers

[+] Author and Article Information
Hironori Horiguchi

Department of Systems and Human Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japane-mail: horiguti@me.es.osaka-u.ac.jp

Satoshi Watanabe

Department of Mechanical Science and Engineering, Graduate School of Engineering, Kyushu University, 6-10-1 Hakozaki, Fukuoka, 812-8581, Japane-mail: fmnabe@mech.kyushu-u.ac.jp

Yoshinobu Tsujimoto

Department of Systems and Human Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japane-mail: tujimoto@me.es.osaka-u.ac.jp

Masanori Aoki

Center for Hydraulic and Mechanical Engineering, Ebara Research Co., Ltd., 2-1 Honfujisawa 4cho-me, Fujisawa, 251-8502, Japane-mail: aoki03531@erc.ebara.co.jp

J. Fluids Eng 122(1), 156-163 (Oct 04, 1999) (8 pages) doi:10.1115/1.483238 History: Received April 08, 1999; Revised October 04, 1999
Copyright © 2000 by ASME
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References

Figures

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Model for present analysis
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Steady cavity length for the cascade with C/h=2.0 and β=71.41 deg at ϕ=0.10. (a) Numerical results, (b) experimental results by 5.
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Relative velocity vector at ϕ=0.10. (a) Numerical result at σ=0.37, (b) experimental result at σ=0.10 5.
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Steady cavity length for the cascade with various solidities and stagger angles. (a) C/h=2.0 and 3.0, (b) C/h=1.0, (c) C/h=0.5, (d) C/h=1.5.
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Steady cavity shape and velocity in the cascade with C/h=2.0 and β=80 deg in the case with α=4 deg. (a) Equal length cavitation (σ/2α=7.0,ls/h=0.202), (b) equal length cavitation (σ/2α=2.58,ls/h=0.640), (c) alternate blade cavitation (σ/2α=2.58,ls/h=0.249 and 0.882).
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Destabilizing roots for the cascade with C/h=2.0 and β=80 deg. (a) Strouhal number for equal length cavitation, (b) Strouhal number for alternate blade cavitation, (c) phase angle for alternate blade cavitation.
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Destabilizing roots for the cascade with C/h=1.0 and β=80 deg. (a) Strouhal number for equal length cavitation, (b) Strouhal number for alternate blade cavitation, (c) phase angle for alternate blade cavitation.

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