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Effect of turbulence characteristics on local flame structure of H2-air premixed flames
Journal of Turbulence, 2002Direct numerical simulations (DNS) of turbulent premixed flames are conducted to investigate effects of turbulence characteristics on the local flame structure. A detailed kinetic mechanism including 12 reactive species and 27 elementary reactions is used to represent the H2–air reaction in turbulence. Numerical conditions of DNS can be classified into
Y. Nada, M. Tanahashi, T. Miyauchi
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Role of Flame Dynamics on the Bifurcation Characteristics of a Ducted V-Flame
Combustion Science and Technology, 2014Combustion instability is a nonlinear process with interaction between combustion and acoustics. The nonlinearity in the combustion process is observed in the flame dynamics. In our study of a ducted laminar premixed V-flame, we varied the distance between the flame anchor and the duct exit.
R. Vishnu +2 more
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An Experimental Study on Flame Characteristics of Hydrogen Diffusion Flames [PDF]
, 1993 An experimental study has been performed on hydrogen jet diffusion flames from vertical circular nozzles burning in free air. The direct photographic method was employed to investigate the influence of fuel flow rate and nozzle diameter, d, on the flame morphology.
TORII, Shuichi +3 more
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CHARACTERISTICS OF FLAME RETARDANTS OF WOOD
Technosphere Safety: Modern Scientific Trends, Technical and Organizational Means and Methods of Ensuring Safety, and Special Education – 2025 : Proceedings of the All-Russian Scientific and Practical Conference Dedicated to the 95th Anniversary of the G.F. Morozov Voronezh State Forestry UniversityAs initial information for conducting research using modern methods for determining the fire resistance of wood, as well as mathematical statistical methods for processing the data obtained, information on the use of fire-bioprotective compounds for wood is provided.
S. Sazonova +3 more
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An Experimental Investigation on Characteristics of Individual Flame and Multi-jet Flame
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2013In this article, the differences between individual flame and multi-jet flames are studied. The results show that the air-blast atomization flame length is co-controlled by liquid atomization and combustion intensity. Multi-jet burner is an effective method to improve combustion intensity and shorten flame absolute length.
Q. F. Liang +3 more
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Characteristics of Flame Bases for V-Gutters Stabilized Premixed Flames
Volume 8A: Heat Transfer and Thermal Engineering, 2013The objective of this work is to investigate the flame stabilization mechanism and the impact of the operating conditions on the characteristics of the steady, lean premixed flames. It’s well known that the flame base is very important to the existence of a flame, such as the flame after a V-gutter, which is typically used in ramjet and turbojet or ...
Fan Gong, Yong Huang
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On the Flame and Vorticity Characteristics of a Fluidically Stabilized Premixed Turbulent Flame
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010Flame stabilization is the act of maintaining combustion in the presence of a high-speed premixed flow, and continues to be an important process that influences the performance and limitations for propulsion applications. A common approach for current generation flame holders involves the employment of a low-speed recirculation zone where hot ...
David Forliti, Kareem Ahmed
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Dynamic characteristics of flame fronts in a turbulent premixed flame zone
Symposium (International) on Combustion, 1985Instantaneous local flame front movements in the flame zone of a turbulent premixed burner flame have been examined using a micro-electrostatic probe with three sensors. Based on the measured values of the instantaneous inclined angle and velocity of the local flame front, frequency distributions at representative locations in the flame zone were ...
Takuji Suzuki, Toshisuke Hirano
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Precursor flame characteristics of flame spread over aviation fuel
Applied Thermal Engineering, 2017Abstract Research on flame spreading over liquids is indispensable to make a fire risk assessment of large-sized pool fires in their incipient stages. This precursor flame that is a unique behavior for flame spread over hydrocarbon oils is still not exhaustively understood. A series of tests on flame spread over aviation fuel of RP-5 is well designed
Manhou Li +3 more
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Flame speed characteristics of turbulent expanding flames in a rectangular channel
Combustion and Flame, 2019Abstract We present results from studies of freely expanding flames in a unique small-scale convective facility for different free-stream initial conditions, characterized by Taylor-Reynolds numbers in the range of R e λ g = 179 − 395 (using the streamwise RMS velocity component and the lateral Taylor-microscale) and an inertial ...
Dan Fries +4 more
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