Results 261 to 270 of about 170,719 (313)
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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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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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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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Fire and Materials, 2007
AbstractThis paper gives a numerical model for flame spread along combustible flat solid with charring materials. The presented model consists of a one‐dimensional flame spread model coupled with a one‐dimensional pyrolysis model. The existing experimental data (the ceiling flame spread beneath medium density fibreboard) are used for comparison to ...
W. G. Weng, Y. Hasemi
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AbstractThis paper gives a numerical model for flame spread along combustible flat solid with charring materials. The presented model consists of a one‐dimensional flame spread model coupled with a one‐dimensional pyrolysis model. The existing experimental data (the ceiling flame spread beneath medium density fibreboard) are used for comparison to ...
W. G. Weng, Y. Hasemi
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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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Concurrent turbulent flame spread
Symposium (International) on Combustion, 1991The rate of flame spread over the surface of thick PMMA sheets has been measured as a function of the velocity and turbulence intensity of a forced air flow concurrent with the direction of flame propagation. It is shown that the flow turbulence has a strong influence on the flame spread process.
L. Zhou, A.C. Fernandez-Pello
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Flame spread on aviation fuels
Fire Safety Journal, 1997Abstract Flame spread rates and flame spread induction times have been measured for JP-5, JP-8 and mixtures of these fuels over the temperature range 10–90°C. The flame spread data were correlated on the basis of the initial liquid temperature relative to the closed cup flashpoint.
D. White +3 more
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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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2016
Surface flame spread is a process of a moving flame in the vicinity of a pyrolyzing region on the surface of a solid or liquid that acts as a fuel source. It is distinct from flame propagation in a premixed fuel and oxygen system in that the surface spread of flame occurs as a result of the heating of the surface due to the direct or remote heating by ...
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Surface flame spread is a process of a moving flame in the vicinity of a pyrolyzing region on the surface of a solid or liquid that acts as a fuel source. It is distinct from flame propagation in a premixed fuel and oxygen system in that the surface spread of flame occurs as a result of the heating of the surface due to the direct or remote heating by ...
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Instability of Flame Spread in Microgravity
Heat Transfer: Volume 4, 1999Abstract Results from the first part of an experimental study of flame spread instability are presented. The instabilities were investigated in the NASA drop facilities because the particular instabilities being examined were most pronounced in microgravity, when the influences of buoyancy were minimized.
Lisa M. Oravecz +2 more
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