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The Effect of Inlet Guide Vanes on Inlet Flow Distortion Transfer and Transonic Fan Stability

[+] Author Affiliations
M. J. Shaw, P. G. Tucker

University of Cambridge, Cambridge, UK

P. Hield

Rolls-Royce plc, Bristol, UK

Paper No. GT2013-94998, pp. V06AT35A020; 11 pages
doi:10.1115/GT2013-94998
From:
  • ASME Turbo Expo 2013: Turbine Technical Conference and Exposition
  • Volume 6A: Turbomachinery
  • San Antonio, Texas, USA, June 3–7, 2013
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5522-5
  • Copyright © 2013 by Rolls-Royce plc

abstract

An investigation has been carried out into the effects of variable inlet guide vanes (VIGVs) on the performance and stability margin of a transonic fan in the presence of inlet flow distortion. The study was carried out using computational fluid dynamics (CFD) and validated with experimental data. The capability of CFD to predict the changes in performance with or without VIGVs in the presence of an inlet flow distortion is assessed. Results show that the VIGVs improve the performance and stability margin and do so by reducing the amount of swirl at inlet to the rotor component of the fan.

Copyright © 2013 by Rolls-Royce plc

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