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TECHNICAL PAPERS

Effect of Reynolds Number and Surface Roughness on the Efficiency of Centrifugal Pumps

[+] Author and Article Information
J. F. Gülich

Sulzer Pumps, Winterthur and Ecole Polytechnique, Lausanne, Switzerland

J. Fluids Eng 125(4), 670-679 (Aug 27, 2003) (10 pages) doi:10.1115/1.1593711 History: Received July 23, 2002; Revised February 04, 2003; Online August 27, 2003
Copyright © 2003 by ASME
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References

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Figures

Grahic Jump Location
Multipliers for overall efficiency versus specific speed
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Multipliers for hydraulic efficiency versus specific speed
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Difference between predicted and measured overall efficiency
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Difference between predicted and measured hydraulic efficiency
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Fraction of scalable losses in hydraulic passages and roughness function
Grahic Jump Location
Predicted versus measured overall efficiencies for highly viscous flows
Grahic Jump Location
Predicted versus measured hydraulic efficiencies for highly viscous flows
Grahic Jump Location
Roughness equivalence factor as function of roughness pitch to height

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