A Compact Diffuser System for Annular Combustors PUBLIC ACCESS

[+] Author Affiliations
R. C. Adkins

Cranfield Institute of Technology, Cranfield, Bedford, England

J. O. Yost

Rolls-Royce Ltd., Filton, Bristol, England

Paper No. 83-GT-43, pp. V001T01A021; 8 pages
  • ASME 1983 International Gas Turbine Conference and Exhibit
  • Volume 1: Turbomachinery
  • Phoenix, Arizona, USA, March 27–31, 1983
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7951-1
  • Copyright © 1983 by ASME


Airflow tests have been conducted on an aerodynamic simulation of a combustor with pre-diffuser of compact configuration. The inlet Mach number throughout the tests was 0.35. The configuration was successful because of the attainment of a high pressure recovery, (Cp = 0.80), coupled with an exceptionally low total pressure loss (λ = 0.04). A useful analytical relationship is derived between the aerodynamic performance of combustor, compressor exit Mach number and diffuser performance.

Copyright © 1983 by ASME
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