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TECHNICAL PAPERS

Rotating Cavitation in a Centrifugal Pump Impeller of Low Specific Speed

[+] Author and Article Information
Jens Friedrichs, Günter Kosyna

Pfleiderer-Institut für Strömungsmaschinen, TU Braunschweig, Braunschweig, Germany

J. Fluids Eng 124(2), 356-362 (May 28, 2002) (7 pages) doi:10.1115/1.1457451 History: Received August 02, 2001; Revised October 17, 2001; Online May 28, 2002
Copyright © 2002 by ASME
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References

Figures

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FFT of pressure signals: Blade suction side (top) and impeller hub (bottom), quasi-steady cavitation (left) and within rotating cavitation (right) at 45 percent part load, (φ=0.0136)
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Cross-sectional view of the test pump
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Plane view of impeller 2
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Impeller 2 characteristic and incipient cavitation
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Head-drop-curves of impeller 2
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Snapshot of rotating cavitation at 45 percent part load (φ=0.0136)
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Quasi-steady state at 45 percent part load
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Snapshots of rotating cavitation at 45 percent part load (φ=0.0136), fiber-probe fitted blade
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Quasi-steady state at 45 percent part load
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Sketches of rotating cavitation from high-speed film, φ=0.0165

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