Results 231 to 240 of about 71,459 (273)

Characterization of impinging jet flames

Combustion and Flame, 1999
This brief communication reports five basic combustion modes of impinging jet flames that have been identified experimentally. The apparatus involves a burner and a water-cooled plate which is positioned directly above the burner nozzle ...
Y ZHANG, K BRAY
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Vortex-flame interactions in opposing-jet premixed flames

38th Aerospace Sciences Meeting and Exhibit, 2000
A time-dependent CFDC code incorporating detailed chemical kinetics for methane combustion was developed for the simulation of local and temporal quenching process that is observed during a vortex-flame interaction in a premixed flame. The chemistry model was validated by simulating a weakly strained axisymmetric counter-flow premixed flame and by ...
V. Katta, W. Roquemore
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Flame and Soot Boundaries of Laminar Jet Diffusion Flames

AIAA Journal, 2002
The shapes (flame-sheet and luminous-flame boundaries) or steady weakly buoyant round hydrocarbon-fueled laminar-jet diffusion flames in still and coflowing air were studied both experimentally and theoretically. Flame-sheet shapes were measured from photographs using a CH optical filter to distinguish flame-sheet boundaries in the presence of blue CO2
F. Xu, Z. Dai, G. M. Faeth
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Diffusion in laminar flame jets

Symposium on Combustion and Flame, and Explosion Phenomena, 1948
Summary The lengths and concentration patterns offlames from circular nozzles burning in free air have been determined over a wide range of velocities with several nozzle diameters and for various gases and primary air-gas ratios. As the nozzle velocity is increased from zero the flame, burning under conditions of diffusional mixing with air ...
H.C. Hottel, W.R. Hawthorne
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Turbulent hydrocarbon jet flames

Progress in Energy and Combustion Science, 1982
Abstract To consider turbulent hydrocarbon jet flames as an ensemble of wrinkled laminar flames gives useful information about details of the combustion process by studying reactive diffusive interfaces. Combined with the conserved scalar approach, non-premixed turbulent jet flames can be computed with satisfactory accuracy.
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Measurement of the Conductivity of a Jet Flame

Journal of Applied Physics, 1954
A method for the measurement of the complex conductivity of a rocket exhaust flame is described. Typical results are shown for an acid-aniline rocket motor and a frequency of 200 mc/sec. The importance of sodium impurities is pointed out and illustrated experimentally.
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Stability of laminar-jet flames

Symposium (International) on Combustion, 1965
A self-excited flame oscillation of low frequency appears often, when laminar fuel jets burn in open air. The flame oscillation is axially symmetrical and has no connection with the size of combustion chambers and the length of fuel pipes. The present paper reports the results of the study of this phenomenon on the basis of the hypothesis that the ...
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Transition to detonation in a flame jet

Combustion and Flame, 1989
Abstract The results of an experimental and numerical investigation of flame-jet ignition of an acetyleneair cloud contained in a 2 m diameter plastic bag, 8 m long, are reported. The flame jet is producted by an acetyleneair flame in a 0.66 m diameter tube, 11 m long. The composition of the mixture was varied to obtain the critical composition for
I.O. Moen, D. Bjerketvedt, T. Engebretsen, A. Jenssen, B.H. Hjertager, J.R. Bakke   +5 more
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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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Jet flame attack on vessels

Journal of Loss Prevention in the Process Industries, 1994
Abstract This paper presents an overview of activities related to jet fires interacting with obstacles as carried out within the CEC-sponsored project JIVE. A modelling technique and experimental data related to the determination of heat transfer from jet fires to obstacles such as pipework and vessels are presented.
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