The Civic: A Concept in Vortex Induced Combustion for the Solar Gemini 10 kW Gas Turbine

[+] Author and Article Information
J. R. Shekleton

Control and Combustion Systems, Solar Turbines International, San Diego, CA 92138

J. Eng. Power 103(1), 34-42 (Jan 01, 1981) (9 pages) doi:10.1115/1.3230705 History: Received December 11, 1979; Online September 28, 2009


The Radial Engine Division of Solar Turbines International, an Operating Group of International Harvester, under contract to the U.S. Army Mobility Equipment Research & Development Command, developed and qualified a 10 kW gas turbine generator set. The very small size of the gas turbine created problems and, in the combustor, novel solutions were necessary. Differing types of fuel injectors, combustion chambers, and flame stabilizing methods were investigated. The arrangement chosen had a rotating cup fuel injector, in a can combustor, with conventional swirl flame stabilization but was devoid of the usual jet stirred recirculation. The use of centrifugal force to control combustion conferred substantial benefit (Rayleigh Instability Criteria). Three types of combustion processes were identified: stratified and unstratified charge (diffusion flames) and pre-mix. Emphasis is placed on five nondimensional groups (Richardson, Bagnold, Damköhler, Mach, and Reynolds numbers) for the better control of these combustion processes.

Copyright © 1981 by ASME
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