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TECHNICAL PAPERS

Experimental and Numerical Investigation of the Flow in a Centrifugal Compressor Volute

[+] Author and Article Information
D. Hagelstein, M. Rautenberg

Institute of Turbomachinery, University of Hannover, Hannover, Germany

K. Hillewaert, R. A. Van den Braembussche

Von Karman Institute for Fluid Dynamics (VKI), Rhode Saint Genèse, Belgium

A. Engeda

Michigan State University, East Lansing, MI 48109

R. Keiper

Kühnle, Kopp & Kausch AG (KKK), Frankenthal, Germany

J. Turbomach 122(1), 22-31 (Feb 01, 1999) (10 pages) doi:10.1115/1.555423 History: Received February 01, 1999
Copyright © 2000 by ASME
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References

Figures

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Centrifugal compressor test stand
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Unshrouded 60 deg backswept impeller with 20 blades (every second one splittered)
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Cross-sectional view of the centrifugal compressor with external volute (including planes for probe measurements inside the volute)
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Compressor shroud wall with external volute of rectangular cross section
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Circumferential pressure distribution at diffuser exit (λ=1.45) for Mu2=0.86
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Circumferential distribution of total pressure, flow angle, and total temperature at λ=1.4
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Results of the flow field measurements in planes 1 to 7 (m/mdes=1.35, Mu2=0.86): (a) swirl velocity Vswirl; (b) pressure recovery coefficient Cp; (c) total pressure loss coefficient ω; (d) throughflow velocity Vt
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Grid of compressor volute
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External volute cross section grid at θ=270 deg
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Comparison of measured and calculated pressure distribution at diffuser exit (λ=1.45)
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Comparison of measured and calculated flow field in plane 3 for nominal operating point (m/mopt=1.0)
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Comparison of measured and calculated flow field in plane 3 near choke flow (m/mopt=1.35)
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Comparison of measured and calculated flow field in plane 3 near surge (m/mopt=0.4)
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Comparison of measured and calculated global volute performance (pressure recovery and total pressure loss)

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