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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

Figures

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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
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Predicted versus measured overall efficiencies for highly viscous flows
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Predicted versus measured hydraulic efficiencies for highly viscous flows
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Roughness equivalence factor as function of roughness pitch to height

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