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Investigating Soot Parameters in an Ethane/Air Counterflow Diffusion Flame at Elevated Pressures
, 2020Soot emissions from diesel engines and gas turbines are influenced by the combustion environment. Pressure is one of the parameters, which affects particulate emissions, and these effects are poorly understood on soot parameters.
Hafiz M. F. Amin, W. Roberts
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Nanosecond Plasma Enhanced Counterflow Diffusion Flames
42nd AIAA Plasmadynamics and Lasers Conference, 2011The present work establishes an integrated theoretical/numerical framework to study the characteristics of plasma enhanced H2-air counterflow diffusion flames. The oxidizer flow is activated by a parallel-plate nanosecond pulsed plasma discharge system with pulse duration ranging between 15 to 130 ns, and pulsing frequency between 5 to 60 kHz.
Sharath Nagaraja, Vigor Yang
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Double-spray counterflow diffusion flame model
Combustion Theory and Modelling, 1998In this spray model we consider two gaseous streams approaching each other from opposite directions in a counterflow. The two opposed streams each carry a distribution of liquid droplets. The sprays vaporize, and the vaporized fuel and oxidizer gases diffuse and convect toward a chemical reaction region near the stagnation plane, at which the reactants
Indrek S Wichman, Michael Yang
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Progress in Energy and Combustion Science, 1982
Abstract Laminar counterflow diffusion flames are generally referred to as the pure diffusion flame. This paper reviews experimental studies of these counterflow diffusion flames and presents a detailed summary of our present understanding of them.
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Abstract Laminar counterflow diffusion flames are generally referred to as the pure diffusion flame. This paper reviews experimental studies of these counterflow diffusion flames and presents a detailed summary of our present understanding of them.
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Counterflow diffusion flame with polydisperse sprays
Proceedings of the Combustion Institute, 2002An experimental study was performed on counterflow diffusion flames, in which polydisperse n-heptane sprays carried by a nitrogen stream from the lower duct, burn in oxidizer streams from the upper duct. The droplet-size distributions were varied with the nitrogen flow rate for atomization.
Masato Mikami +2 more
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The premixed flame in a counterflow
Combustion and Flame, 1982Abstract We examine a premixed flame located in a counterflow of fresh cold mixture and hot burnt gas, the latter at a temperature close to that of adiabatic deflagration. A constant density, high activation energy model is adopted, and the steady state response depends essentially on two parameters, the Lewis number, and the temperature of the ...
J. Buckmaster, D. Mikolaitis
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Visualization of Counterflow Flames
1992Laminar counterflow flames have been used to study a variety of combustion problems, for example extinction conditions and chemical kinetic mechanisms with a review in Ref. [1], and to provide information for flamelet models of turbulent flames [2].
E. Mastorakos, A. M. K. P. Taylor
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On the particle evolution in iron pentacarbonyl loaded counterflow methane–air flame
Combustion and Flame, 2018The present work analyzes these particle evolution processes along the plane axis in an iron precursor (iron pentacarbonyl) loaded methane/air counterflow diffusion flame. The addition of iron pentacarbonyl into methane led to the formation of iron-based
A. Raj +4 more
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Effect of Outer Edge Flame on Flame Extinction in Counterflow Diffusion Flames
Transactions of the Korean Society of Mechanical Engineers B, 2012The present study on nitrogen-diluted non-premixed counterflow flames with finite burner diameters experimentally investigates the important role of the outer edge flame in flame extinction. Flame stability diagrams mapping the flame extinction response of nitrogen-diluted non-premixed counterflow flames to varying global strain rates in terms of the ...
Yong-Ho Chung +5 more
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NO formation in counterflow partially premixed flames
Combustion and Flame, 2007An experimental and computational study of NO formation in low-strain-rate partially premixed methane counterflow flames is reported. For progressive fuel-side partial premixing the peak NO concentration increased and the NO distribution along the stagnation streamline broadened.
Hemant Mungekar, Arvind Atreya
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