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TECHNICAL PAPERS

Detailed Flow Study of Mach Number 1.6 High Transonic Flow With a Shock Wave in a Pressure Ratio 11 Centrifugal Compressor Impeller

[+] Author and Article Information
Hirotaka Higashimori, Kunio Sumida, Tooru Suita

Mitsubishi Heavy Industries, Ltd., Nagasaki R&D Center, 5-717-1 Fukahori-Machi, Nagasaki 851-0392, Japan

Kiyoshi Hasagawa

Mitsubishi Heavy Industries, Ltd., Nagoya Guidance & Propulsion Systems Works, 1200 Higashi-Tanaka, Komaki, Aichi 485-8561, Japan

J. Turbomach 126(4), 473-481 (Dec 29, 2004) (9 pages) doi:10.1115/1.1791645 History: Received October 01, 2003; Revised March 01, 2004; Online December 29, 2004
Copyright © 2004 by ASME
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References

Figures

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High transonic impeller
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High pressure ratio compressor test facility
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Compressor characteristics: (a) pressure ratio, (b) efficiency ratio maximum efficiency
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Cross section of compressor and location of LDV and pressure transducer: (a) LDV measuring section, (b) Pressure transducer and LDV window arrangement
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Relative velocity distribution
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Computational grid and Mach number contour: (a) computational grid, (b) Mach number on a stream surface about 3 mm from casing, and (c) Mach number on a stream surface about 1.5 mm from casing
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Mach number contour on each LDV measuring sections: (a) Section II, (b) Section III, (c) Section IV
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Comparison between LDV and CFD: (a) relative velocity, (b) meridional velocity, (c) tangential velocity
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Comparison between LDV and CFD: (a) relative velocity, (b) meridional velocity, (c) tangential velocity
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Comparison between LDV and CFD: (a) relative velocity, (b) meridional velocity, (c) tangential velocity
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Instantanius pressure distribution between main blades
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Pressure contour in the inducer
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Static pressure increase in the inducer
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Summary of notable points: (a) CFD in the vicinity of shroud casing, (b) relative velocity distribution and shock wave at Sec. II, 6 mm from casing, (c) meridional velocity distribution in the vicinity of shroud casing, (d) relative velocity distribution at Sec. III, 6 mm from casing, (e) relative velocity distribution with splitter at Sec. IV, 6 mm from casing

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