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Flame dynamics in a stepped micro-combustor for non-adiabatic wall conditions
Thermal Science and Engineering Progress, 2019Flame stabilization in micro scale combustors has generated significant research interest to develop combustion-based power generators for microelectromechanical (MEMS) systems.
Malhar Malushte, Sudarshan Kumar
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Effect of single-layer wire mesh on premixed methane/air flame dynamics in a closed pipe
, 2020In order to explore methods for suppressing methane combustion and improve the safety of its engineering application. The effect of single-layer wire mesh on premixed methane-air flame behaviors and pressure dynamics in a closed pipe is experimentally ...
Kaiqiang Jin +3 more
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Non-Normality and Internal Flame Dynamics in Premixed Flame-Acoustic Interaction
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010This paper investigates the non-normal nature of premixed flame–acoustic interaction. The thermoacoustic system is modelled using the acoustic equations for momentum and energy, together with the equation for the evolution of the flame front obtained from the kinematicG-equation.
SUBRAMANIAN, PRIYA, SUJITH, RI
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Low swirl premixed methane-air flame dynamics under acoustic excitations
The Physics of Fluids, 2019In this study, simultaneous particle image velocimetry and planar laser induced fluorescence of hydroxyl radical, chemiluminescence imaging, and hot-wire measurements are utilized to study reacting low swirl flow dynamics under low to high amplitude ...
M. Shahsavari +5 more
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1990
A steady flat flame on a circular burner can become unstable due to a competition between mass diffusivity and thermal diffusivity. The resulting dynamical modes of propagation have both spatial and temporal characteristics. We describe these characteristics for a variety of periodic and chaotic modes of propagation.
M. A. Gorman, M. el-Hamdi, K. A. Robbins
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A steady flat flame on a circular burner can become unstable due to a competition between mass diffusivity and thermal diffusivity. The resulting dynamical modes of propagation have both spatial and temporal characteristics. We describe these characteristics for a variety of periodic and chaotic modes of propagation.
M. A. Gorman, M. el-Hamdi, K. A. Robbins
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Dynamics of Flame Lift-Off in Biogas Swirl Flames
51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015Lift-off limits and mechanism of biogas swirl flames were investigated in a gas turbine model combustor using high-repetition-rate OH* chemiluminescence and simultaneous particle image velocimetry (PIV) and OH planar laser induced fluorescence (PLIF). The biogas fuel was represented by 60% methane and 40% carbon dioxide, volumetrically. The test matrix
Qiang An +2 more
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Symposium (International) on Combustion, 1989
Recent advances in the understanding of the structure, propagation, and extinction of laminar flames under the influence of stretch, as manifested by the existence of flame curvature, flow nonuniformity, and flame motion, are reviewed. The emphasis is on premixed flames because of the richness and subtlety of the phenomena involved.
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Recent advances in the understanding of the structure, propagation, and extinction of laminar flames under the influence of stretch, as manifested by the existence of flame curvature, flow nonuniformity, and flame motion, are reviewed. The emphasis is on premixed flames because of the richness and subtlety of the phenomena involved.
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Proceedings of the Combustion Institute, 2019
This paper presents a systematic experimental study of the relative contributions of various near-wall flame dynamics to exhaust CO emissions. Exhaust carbon monoxide (CO) emissions and quenching distance measurements are reported for a laminar forced ...
J. Rivera, R. Gordon, M. Talei
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This paper presents a systematic experimental study of the relative contributions of various near-wall flame dynamics to exhaust CO emissions. Exhaust carbon monoxide (CO) emissions and quenching distance measurements are reported for a laminar forced ...
J. Rivera, R. Gordon, M. Talei
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Dynamics in a Rod Model of Solid Flame Waves
SIAM Journal on Applied Mathematics, 2004Summary: We consider gasless solid fuel combustion in a cylinder of radius \(\tilde{R}\), associated with the SHS (self-propagating high-temperature synthesis) process, which employs combustion waves to synthesize materials. A powder mixture of reactants is cold pressed into a sample, typically a cylinder, and ignited at one end.
J. H. Park +2 more
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Combustion theory and modelling, 2019
Combustion instability due to thermo-acoustic interactions is a critical combustion problem that requires a thorough understanding because of its adverse impact on stable and reliable operation of combustors in high-speed propulsion devices like gas ...
Tejas Pant, Chao Han, Haifeng Wang
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Combustion instability due to thermo-acoustic interactions is a critical combustion problem that requires a thorough understanding because of its adverse impact on stable and reliable operation of combustors in high-speed propulsion devices like gas ...
Tejas Pant, Chao Han, Haifeng Wang
semanticscholar +1 more source