Conical Grid Plate Flame Stabilizers: Number and Size of Jet Shear Layers PUBLIC ACCESS

[+] Author Affiliations
A. F. Ali, G. E. Andrews

University of Leeds, Leeds, UK

Paper No. 87-GT-258, pp. V003T06A030; 9 pages
  • ASME 1987 International Gas Turbine Conference and Exhibition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Anaheim, California, USA, May 31–June 4, 1987
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7925-2
  • Copyright © 1987 by ASME


The influence of the number and size of the jet shear layers, at a constant total hole area, was investigated in a propane fuelled conical grid plate flame stabiliser. The combustion inefficiency, NOx and flame stability were determined for shear layer designs with 90, 8 and 4 holes. The total shear layer volume increased as the number of holes was reduced and combustion within these larger shear layers was responsible for the superior flame stability and combustion efficiency, but higher NOx emissions. Large shear layers and hence a small number of holes were necessary to achieve an adequate performance at a 400K inlet temperature, but at 600K the 90 hole system had the best combination of low NOx and combustion inefficiency. However, the 8 hole system had a performance close to the 90 hole system at 600K and better than it at 400K and was concluded to be the preferable design.

Copyright © 1987 by ASME
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