Results 241 to 250 of about 22,777 (264)

Structural characteristics of lifted turbulent-jet flames

Symposium (International) on Combustion, 1989
Instantaneous planar images of the CH4 concentration in a lifted turbulent-jet flame were obtained by collecting Raman-scattered light perpendicular to a thin sheet of laser light passing through the axis of the flame. The instantaneous images were averaged to obtain mean and fluctuating statistics and probability distributions of the CH4 concentration.
R.W. Schefer, M. Namazian, J. Kelly
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Lifted turbulent jet flames

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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Eddies in Turbulent Jet Diffusion Flames

Nature, 1953
THE turbulent jet diffusion flame may be defined as a flame in which a high-velocity jet of fuel entrains the combustion air by its own momentum. In such flames the rate of combustion is primarily governed by the rate of mixing once the fuel stream has been heated by re-radiation above an ignition temperature.
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Spark ignition of lifted turbulent jet flames

Combustion and Flame, 2006
This paper presents experiments on ignition and subsequent edge flame propagation in turbulent nonpremixed methane jets in air. The spark position, energy, duration, electrode diameter and gap, and the jet velocity and air premixing of the fuel stream are examined to study their effects on the ignition probability defined as successful flame ...
S AHMED, E MASTORAKOS
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Further experiments on turbulent jet diffusion flames

Symposium (International) on Combustion, 1975
The earlier investigation of Kent and Bilger on the turbulent diffusion flame of a jet of hydrogen in a co-flowing stream of air is extended to give more detailed measurements of the nitric oxide field in the flame. Nitric oxide measurements appear to be particularly sensitive to the sampling method used and the results obtained with a small slender ...
R.W. Bilger, R.E. Beck
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Propagation and fractals of turbulent jet flames

Journal of Propulsion and Power, 1992
Propagation of turbulent jet flames under various flow conditions was characterized using a thin-filament pyrometn technique. The flame-propagation data were analyzed by fractal analysis to predict the turbulent flame vekcity, and the results were compared with measured velocity values.
Tzong H. Chen, Larry P. Goss
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Mechanism of Flame Stabilization in Turbulent, Lifted-Jet Flames

Combustion and Flame, 1998
Particle 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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Velocity fluctuations in turbulent jets and flames

Symposium (International) on Combustion, 1969
The aim of this work was to develop simple and reliable techniques for turbulence detection in flames. Two approaches were followed, one based on properties of the equations of motion and the other based on properties of impact probes with differing geometry.
H.A. Becker, A.P.G. Brown
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Experiments on axisymmetrically pulsed turbulent jet flames

AIAA Journal, 1990
An experimental study of the effects of strong axisymmetric pulsing on a free, vertical turbulent jet diffusion flame is presented. The jet flame was pulsed over the frequency range of 2-1300 Hz with amplitudes ranging from 0.13-0.89 of the centerline jet velocity.
Jeffery A. Lovett, Stephen R. Turns
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Turbulent jet diffusion flames: consolidation of flame height data

Combustion and Flame, 1999
Literature data on flame heights of turbulent jet diffusion flames are examined in ratios to flame heights of purely buoyant turbulent diffusion flames. The flame height ratio is found to be a function of the gas release momentum in ratio to the momentum generated by a purely buoyant flame.
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