TY - GEN
T1 - Analysis of intrinsic flamefront instabilities in response to external acoustic forcing
AU - Akkerman, V. B.
AU - Law, C. K.
PY - 2011
Y1 - 2011
N2 - The response of premixed and diffusion flames to externally applied acoustic forcing was analyzed for its relevance to the excitation of unstable combustion in liquid rocket engines (LREs). Recognizing that combustion instability can be manifested in several modes, analyses were conducted for the diffusional-thermal, Darrieus-Landau, and Rayleigh-Taylor (body-force) instabilities for premixed flames, and the Kelvin-Helmholtz and Rayleigh-Taylor instabilities for diffusion flames. The role of chamber-generated sound in modifying the inherent flamefront instabilities and triggering the parametric instability was considered. The dependence of the stability domains on the various thermal-chemical flame properties as well as hydrodynamic parameters were determined.
AB - The response of premixed and diffusion flames to externally applied acoustic forcing was analyzed for its relevance to the excitation of unstable combustion in liquid rocket engines (LREs). Recognizing that combustion instability can be manifested in several modes, analyses were conducted for the diffusional-thermal, Darrieus-Landau, and Rayleigh-Taylor (body-force) instabilities for premixed flames, and the Kelvin-Helmholtz and Rayleigh-Taylor instabilities for diffusion flames. The role of chamber-generated sound in modifying the inherent flamefront instabilities and triggering the parametric instability was considered. The dependence of the stability domains on the various thermal-chemical flame properties as well as hydrodynamic parameters were determined.
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M3 - Conference contribution
AN - SCOPUS:84946762016
T3 - Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2011
SP - 616
EP - 624
BT - Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2011
PB - Combustion Institute
T2 - Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2011
Y2 - 9 October 2011 through 12 October 2011
ER -