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Response of a Rod Stabilized, Premixed Flame to Longitudinal Acoustic Forcing

[+] Author Affiliations
Santosh J. Shanbhogue, Tim C. Lieuwen

Georgia Institute of Technology, Atlanta, GA

Paper No. GT2006-90302, pp. 247-254; 8 pages
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air
  • Volume 1: Combustion and Fuels, Education
  • Barcelona, Spain, May 8–11, 2006
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4236-3 | eISBN: 0-7918-3774-2
  • Copyright © 2006 by ASME


This paper describes an experimental investigation of the flame sheet dynamics of an acoustically forced bluff body flame over a range of perturbation frequencies and amplitudes. When acoustically excited, the flame sheet displays well defined, periodic corrugations, presumably due to flame sheet perturbations created at its attachment point that convect downstream, as well as the rollup of shear layer instabilities into large scale coherent structures. The dynamics of the flame front response, such as its growth and decay in the bluff body wake, disturbance convection velocity, sub-harmonic response, and total flame area is discussed.

Copyright © 2006 by ASME
Topics: Acoustics , Flames



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