Results 261 to 270 of about 169,568 (295)
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Upward flame spread on composite materials
Fire Safety Journal, 1995Three existing models of upward flame spread were tested against intermediate-scale experiments on a vinyl ester/glass composite. Characterization of rate of heat release per unit area, needed as input to the models, was obtained at external radiant fluxes below the minimum for ignition by adaptation of a method due to Kulkarni.
T. J. Ohlemiller, T. G. Cleary
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Journal of Jet Propulsion, 1956
Flame spreading from 0.5 to 2.25-inch V-gutter baffles in two-dimensional turbulent ducted flow was studied experimentally. Measurements of combust ion efficiency were made at distances of 10 to 43 inches downstream of the flame stabilizing baffle(s) in a 9 X 5-inch duct .
RICHARD J. PETREIN +2 more
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Flame spreading from 0.5 to 2.25-inch V-gutter baffles in two-dimensional turbulent ducted flow was studied experimentally. Measurements of combust ion efficiency were made at distances of 10 to 43 inches downstream of the flame stabilizing baffle(s) in a 9 X 5-inch duct .
RICHARD J. PETREIN +2 more
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Intraluminal flame spread in tracheal tubes
The Laryngoscope, 1994AbstractIntraluminal combustion in polyvinyl chloride tracheal tubes was investigated. Two flame types were observed: intraluminal and downstream. The flame‐spread velocity, burning rate, and equivalence ratio of the intraluminal flame were determined.
G L, Wolf, G W, Sidebotham, J B, Stern
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Flame height correlation and upward flame spread modelling
Fire and Materials, 2002AbstractPrevious work has demonstrated that flame height is one of the two most important parameters determining the rate of vertical flame spread on a wall. Flame spread models rely on empirical flame height correlations of the form Xf=KQ̇′n, but there have been no carefully controlled experiments designed to establish the validity of such ...
Kuang‐ Chung Tsai, Dougal Drysdale
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Opposed-flow flame spread in a narrow channel: Prediction of flame spread velocity
Proceedings of the Combustion Institute, 2019Abstract This paper presents results of experimental and numerical investigations of flame spread along a thin solid in an opposed oxygen flow in a narrow channel. Experiments are conducted at various oxygen flow speeds and gas-phase heights. For a low gas-phase height or a low oxygen flow speed, a large portion of solid is left unburned, and the ...
Koshi Funashima +3 more
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Combustion Science and Technology, 1984
Abstract A survey of the characteristics and predictions of the different theoretical models of the spread of flames over the surface of a solid combustible in opposed or concurrent oxidizing flows shows that, at present, there is a good understanding of what are the controlling mechanisms of the flame spread process andl of what is the necessary ...
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Abstract A survey of the characteristics and predictions of the different theoretical models of the spread of flames over the surface of a solid combustible in opposed or concurrent oxidizing flows shows that, at present, there is a good understanding of what are the controlling mechanisms of the flame spread process andl of what is the necessary ...
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Flame spreading across liquid fuels
Fire Safety Journal, 1981The various mechanisms postulated to control the rate of flame propagation across a liquid fuel surface are discussed in detail. Major consideration is given to the surface tension induced flows which control the propagation at liquid temperatures well below the closed cup flash point and the cause of the flame pulsation noted at liquid temperatures ...
Irvin Glassman, Frederick L. Dryer
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Flame spreading over liquid ethanol
The European Physical Journal B, 2000Flame spreading over liquid ethanol has been experimentally characterized for ethanol for subflash temperatures, in two different channels. Three different spreading regimes have been observed. A uniform region (with flame velocities close to 10 cm/s) appears for values of the initial surface liquid temperature \(\)above a critical value \(\).
E. Degroote, P.L. Garcia-Ybarra
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Postulations of flame spread mechanisms
Combustion and Flame, 1974Abstract An experimental study was conducted to explore the flame spread mechanism over thin solid fuel sheets. Flame spread rates over paper at various inclined angles were measured, and Schlieren photography was used to qualitatively assess heat transfer to the unburnt material in front of the pyrolysis zone.
Toshisuke Hirano +2 more
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Flame spread through porous fuels
Symposium (International) on Combustion, 1973A quantitative analysis of the steady-state propagation of a quasi-one-dimensional flame through a thermally thin, porous layer of fuel is presented. The rate of energy transfer from the combustion zone to the fuel is assumed to control the rate of flame propagation.
Patrick J. Pagni, Thomas G. Peterson
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