Effects of Back-Pressure in a Lean Blowout Research Combustor

[+] Author and Article Information
G. J. Sturgess

Pratt & Whitney, East Hartford, CT 06108

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

University of Dayton, Dayton, OH 45469

A. L. Lesmerises, D. Shouse

Wright Laboratories, Wright-Patterson Air Force Base, Dayton, OH 45433

J. Eng. Gas Turbines Power 115(3), 486-498 (Jul 01, 1993) (13 pages) doi:10.1115/1.2906735 History: Received February 06, 1992; Online April 24, 2008


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 © 1993 by The American Society of Mechanical Engineers
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