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Effects of Back-Pressure in a Lean Blowout Research Combustor FREE

[+] Author Affiliations
G. J. Sturgess

Pratt & Whitney, East Hartford, CT

S. P. Heneghan, M. D. Vangsness, D. R. Ballal

University of Dayton, Dayton, OH

A. L. Lesmerises, D. Shouse

Wright Laboratories, Wright-Patterson Air Force Base, Dayton, OH

Paper No. 92-GT-081, pp. V003T06A001; 15 pages
doi:10.1115/92-GT-081
From:
  • ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Cologne, Germany, June 1–4, 1992
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7895-8
  • Copyright © 1992 by ASME

abstract

Experimental information is presented on the effects of back-pressure on flame-holding in a gaseous fuel research combustor. Data for wall temperatures and static pressures are used to infer behavior of the major recirculation zones, as a supplement to some velocity and temperature profile measurements using LDV and CARS systems. Observations of flame behavior are also included. Lean blowout is improved by exit blockage, with strongest sensitivity at high combustor loadings. It is concluded that exit blockage exerts its influence through effects on the jet and recirculation zone shear layers.

Copyright © 1992 by ASME
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