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A Numerical Investigation of Blade Lean Angle Effects on Flow in a Centrifugal Impeller PUBLIC ACCESS

[+] Author Affiliations
J. H. G. Howard, M. Ashrafizaadeh

University of Waterloo, Waterloo, ON, Canada

Paper No. 94-GT-149, pp. V001T01A059; 7 pages
doi:10.1115/94-GT-149
From:
  • ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 1: Turbomachinery
  • The Hague, Netherlands, June 13–16, 1994
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7883-5
  • Copyright © 1994 by ASME

abstract

An established 3-D viscous code (TASCflow3d) for compressible turbulent flow has been used to numerically investigate the effects of lean angle modifications to an existing high performance centrifugal compressor. Numerical results show that an appropriate compound lean can reduce the leakage flow, unload the blade tip and increase the total pressure ratio at a given flow rate while keeping its efficiency at a constant level. They also indicate that a simple lean can marginally improve the impeller efficiency while it lowers the impeller head versus flow curve.

Copyright © 1994 by ASME
This article is only available in the PDF format.

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