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Computation of Axial Flow Compressor to Intake Flow Distortion

[+] Author Affiliations
Eddie Yin-Kwee Ng, Ningyu Liu

Nanyang Technological University, Singapore

Hong Ngiap Lim, Tock Lip Tan

HQ RSAF, Singapore

Paper No. FEDSM2002-31202, pp. 935-942; 8 pages
  • ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
  • Volume 2: Symposia and General Papers, Parts A and B
  • Montreal, Quebec, Canada, July 14–18, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3616-9 | eISBN: 0-7918-3600-2
  • Copyright © 2002 by ASME


The effects of the parameters of inlet distortions on the trend of downstream flow feature in axial compressor are simulated using an integral method. Other than the ratio of drag-to-lift coefficients of the blade and the angle of incidence, the value of distorted inlet velocity is found to be another essential parameter to control the distortion propagation. With this in mind, a distortion propagation line and corresponding distortion propagation factor are proposed to express the effect of the two main inlet parameters: the angle of incidence and the distorted inlet velocity, on the propagation of distortion. From the viewpoint of compressor efficiency, the distortion propagation is further described by a compressor critical performance. The results provide a physical insight of compressor axial behavior and asymptotic behavior of the propagation of inlet distortion, and confirm the active role of compressor in determining the velocity distribution when compressor responds to an intake flow distortion.

Copyright © 2002 by ASME



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