Results 211 to 220 of about 592,637 (278)
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Ultrasonic stabilization of small lifted flames
The Journal of the Acoustical Society of America, 2003Combustion of a fuel gas (such as methane) flowing at low speeds from a nozzle into air produces a flame commonly described as a ‘‘diffusion’’ flame. As the flow rate of fuel is increased, the flame is known to lift off the nozzle. This premixes fuel with air and improves certain aspects of the combustion.
David B. Thiessen +2 more
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Mechanism of Flame Stabilization in Turbulent, Lifted-Jet Flames
Combustion and Flame, 1998Particle image velocimetry was used to study the velocity field in the stabilization region of lifted, turbulent CH 4 -jet flames over a range of Reynolds numbers from 7000 to 19,500. Measured velocities at the flame base are considerably below the turbulent flame speeds derived from previous studies and show a dependence on the Reynolds number.
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Dynamic lifted flame in centerbody burner
Proceedings of the Combustion Institute, 2011Abstract During some exploratory experiments performed on a centerbody burner it was observed that the sooting behavior of the burner could be altered dramatically without changing the fluid dynamics. One of the interesting operating regimes, in which the flame lifts off and forms a column of soot, was identified when oxygen in the annular flow was ...
Viswanath R. Katta +3 more
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Lift-off Behavior and Flame Structure of Interacting Edge Flames
42nd AIAA Aerospace Sciences Meeting and Exhibit, 2004Laminar lifted edge flames stabilized above a five-exit slot burner are examined experimentally and numerically. In the present study, partially-premixed methane and air are used in the three-central slots to produce two neighboring edge flames. By controlling the equivalence ratios in the slots, the separation distance between the interacting edge ...
Amit Wason +3 more
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Noise Reduction in Non-Premixed Lifted-Jet Flames
Flow, Turbulence and Combustion, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ramamurthi, K., Patnaik, R. K.
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1993
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Experiments were conducted on lifted, turbulent jet diffusion flames. An automated technique using a linear photodiode array was implemented to measure the temporal history of the liftoff height h.
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NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Experiments were conducted on lifted, turbulent jet diffusion flames. An automated technique using a linear photodiode array was implemented to measure the temporal history of the liftoff height h.
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Flame Leading Edge and Flow Dynamics in a Swirling, Lifted Flame
Volume 2: Combustion, Fuels and Emissions, Parts A and B, 2012Flames in high swirl flow fields with vortex breakdown often stabilize aerodynamically in front of interior flow stagnation points. In contrast to shear layer stabilized flames with a nearly fixed, well defined flame attachment point, the leading edge of aerodynamically stabilized flames can move around substantially, due to both the inherent dynamics ...
Michael Malanoski +5 more
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Flame stabilization using a plasma discharge in a lifted jet flame
43rd AIAA Aerospace Sciences Meeting and Exhibit, 2005Stable combustion in a harsh environment, such as lean fuel concentration and/or low temperature conditions, is attractive because of its low emissions. However, such flames suffer from lack of stability. In our research, an AC plasma discharge is applied to a lifted jet flame to increase the stability of the flame. Two types of discharges are utilized
Wookyung Kim, Mark Mungal, Mark Cappelli
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On flame holes and local extinction in lifted-jet diffusion flames
Combustion and Flame, 2005This paper reports observations of local extinction events characterized by flame holes in the CH profiles that have been gathered during a simultaneous sequential CH planar laser-induced fluorescence (PLIF) and particle image velocimetry (PIV) investigation of a lifted methane-air diffusion flame.
K.M. Lyons +3 more
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Flame Leading Edge and Flow Dynamics in a Swirling, Lifted Flame
Combustion Science and Technology, 2014Flames in high swirl flow fields with vortex breakdown often stabilize aerodynamically in front of interior flow stagnation points. In contrast to shear layer stabilized flames with a nearly fixed, well-defined flame attachment point, the leading edge of aerodynamically stabilized flames can move around substantially as a result of both the inherent ...
Michael Malanoski +3 more
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