Results 251 to 260 of about 709,423 (312)

A theory for multiple fire-whirl formation

Symposium (International) on Combustion, 1973
In an effort to gain a better understanding of the mechanics involved in the formation ofvortices in buoyancy driven flows, an analysis on the stability of the laminar free convection, due to a line source of heat with ambient shear, was performed by numerical solution of a viscous linear stability equation.
Charles A. Garris, S.L. Lee
openaire   +1 more source

Attenuation of Swirling Motion of a Fire Whirl in a Vertical Shaft

Fire technology, 2021
H. Hung, Z. M. Gao, S. S. Li, Y. Gao, W. Chow, C. Chow   +5 more
semanticscholar   +2 more sources

Internal Fire Whirls in a Vertical Shaft

Journal of Fire Sciences, 2010
Internal fire whirls induced by a pool fire in a vertical shaft of height 15 m with different ventilation conditions are studied experimentally. Ventilation is provided through a rectangular gap at the side wall with varying widths. Gasoline pool fires with diameters up to 0.46 m are set up at the center of the floor. Flame height and burning duration
W.K. Chow, Z. He, Y. Gao
openaire   +1 more source

Model experiment of hazardous forest fire whirl

Fire Technology, 1982
The fluid dynamical scaling laws of forest fires are derived by dimensional analysis and a scale model is constructed to investigate a forest fire which seriously injured several fire fighters. The result of the small-scale experiment indicate that a fire whirl could be generated in such a fire.
Richard I. Emori, Kozo Saito
openaire   +1 more source

The fluid mechanics of fire whirls: An inviscid model

Physics of Fluids, 2000
Whirling fire plumes are known to increase the danger of naturally occurring or post-disaster fires. In order for a fire whirl to exist, there must be an organized source of angular momentum to produce the large swirl velocities as air is entrained into the fire plume. These vorticity-driven fires occur over a large range of length and velocity scales,
Battaglia, Francine, Rehm, Ronald G., Baum, Howard R.   +2 more
openaire   +1 more source

Comparing burner fire whirls to pool fire whirls

Combustion and Flame, 2023
K.A. Hartl, A.J. Smits
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Internal Fire Whirls Induced by Pool Fire in a Vertical Shaft

ASME/JSME 2011 8th Thermal Engineering Joint Conference, 2011
Internal fire whirls induced by a pool fire in a square vertical shaft were studied by experiments and numerical simulations. The burning behaviour of two pool fires in the vertical shaft and in open air was compared. The gap width of the rig is a key factor in onsetting fire whirls.
Yan Huo, W. K. Chow, Ye Gao
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Effect of initial generating eddy height on formation and flame geometry of fire whirl

International journal of wildland fire, 2023
Congcong Ji, Naian Liu, Jiao Lei, Linhe Zhang, Xiaodong Xie, Yang Zhang   +5 more
semanticscholar   +1 more source

Scale-model experiments of moving fire whirl over a line fire

Proceedings of the Combustion Institute, 2013
Abstract A fire whirl, observed during a wildland fire in Brazil in 2010, occurred over a narrow but long line fire and moved along the line fire at nearly a constant speed. There appeared to be no mountains, tall buildings or trees near the scene, indicating that the fire whirl was generated merely by the interaction between the line fire and ...
Kazunori Kuwana, Kozo Sekimoto, Takeaki Minami, Takahiro Tashiro, Kozo Saito   +4 more
openaire   +1 more source

Study on the effect of pressure on fire whirl combustion characteristics with different air-inlet widths

Advanced Composites and Hybrid Materials, 2022
C. Ding, Zijian Yan, Qingyuan Lan, Jinwei Li, Que Huang, Mohamed A. Nassan, Mina Huang, Salah M. El-Bahy, Mohamed H. Helal, Yan Jiao, Changcheng Liu   +10 more
semanticscholar   +1 more source