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Secondary Flow Control on Axial Flow Compressor Cascade Using Vortex Generators

[+] Author Affiliations
Ahmed M. Diaa, Mohammed F. El-Dosoky, Omar E. Abdel-Hafez, Mahmoud A. Ahmed

Assiut University, Assiut, Egypt

Paper No. IMECE2014-37790, pp. V001T01A069; 8 pages
doi:10.1115/IMECE2014-37790
From:
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 1: Advances in Aerospace Technology
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4642-1
  • Copyright © 2014 by ASME

abstract

Axial flow compressors have a limited operation range due to the difficulty controlling the secondary flow. Vortex generators are considered to control the secondary flow losses and consequently enhance the compressor’s performance. In the present work, a numerical simulation of three-dimensional unsteady compressible flow has been developed in order to gain insight into the nature of this flow. Based on the numerical simulation, the effects of vortex generators with variable geometrical parameters and their application inside the cascade are investigated. The predicted flow fields with and without the vortex generators are presented and discussed. For each configuration of vortex generator, the total pressure and loss coefficient are calculated. The predicted velocity and pressure distributions at different locations are compared with the predicted and measured values available in the literatures.

Copyright © 2014 by ASME

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