Analysis of combustion-driven acoustics

Combustion-driven acoustic oscillations are investigated by performing a one-dimensional stability analysis of a burner-stabilized premixed flame. In contrast to other investigators, no initial acoustic wave is assumed in the analysis; the downstream acoustic field results from flame instability. Tw...

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Bibliographic Details
Published inChemical engineering science Vol. 53; no. 9; pp. 1679 - 1687
Main Authors Boshoff-Mostert, L., Viljoen, H.J.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.05.1998
Elsevier
Subjects
acoustic
Applied sciences
Combustion
Combustion. Flame
Energy
Energy. Thermal use of fuels
Exact sciences and technology
stability analysis
Theoretical studies
Theoretical studies. Data and constants. Metering
acoustic
stability analysis
Combustion
Stability
Premixed flame
Burner
Acoustic instability
Hopf bifurcation
Modeling
Steady state solution
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Summary:Combustion-driven acoustic oscillations are investigated by performing a one-dimensional stability analysis of a burner-stabilized premixed flame. In contrast to other investigators, no initial acoustic wave is assumed in the analysis; the downstream acoustic field results from flame instability. Two models are considered: the thermodiffusive model (uncoupled model) and the fully coupled thermodiffusive-hydrodynamic model. The fully coupled problem exhibits instability at a much lower critical Lewis number than the uncoupled problem.
ISSN:0009-2509
1873-4405
DOI:10.1016/S0009-2509(98)00015-3