Theoretical Approach on Flame Tilt Based on Apparent Flame Heights in Free Boundaries

Oka, Y.; Kurioka, Hitoshi; Satoh, Hiroomi; Sugawa, Osami

doi:10.3130/aijs.64.147_3

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…The temperature of the flame area was at least 250°C. [1] The curves shown in the figures indicate the trajectory of the central axis of the fire plume. In the square-shape opening and vertically-long rectangular opening, the flame grew upward after it was ejected, and the plume axis was drawn as if drifting away from the wall above the openings.…”

Section: Introductionmentioning

confidence: 99%

Fire Plume Ejected from an Opening in nconfined Space Part 3 Behavior of Fire Plume Ejected from an Opening in the Vicinity of Opposed Walls

Nakao

Yanagisawa

et al. 2007

Fire Science and Technology

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Section: Introductionmentioning

confidence: 99%

Fire Plume Ejected from an Opening in nconfined Space Part 3 Behavior of Fire Plume Ejected from an Opening in the Vicinity of Opposed Walls

Nakao

Yanagisawa

et al. 2007

Fire Science and Technology

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“…The research on flame shape and plume property from a single fire source in the presence of cross-winds in unconfined space was reported by Thomas [1], AGA [2] and other researchers [3][4][5]. Oka and Sugawa also have conducted some experiments and proposed the empirical formulae on the apparent flame height and flame tilt angle [6,7]. These models were derived based on experimental results with a square burner of 0.1 m x 0.1 m and releasing dimensionless heat release rate, Q*, ranging from 0.2 to 4.5.…”

Section: Introductionmentioning

confidence: 99%

Effect Of Cross-Winds To Apparent Flame Height And Tilt Angle From Several Kinds Of Fire Source

Oka¹,

Sugawa²,

Imamura³

et al. 2003

Fire Saf. Sci.

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Experiments with a single fire source were carried out in an unconfined space to characterise the effects of crosswinds on apparent flame heights and flame tilt angles. Three sets of propane burners were used as model fire sources. One was a small circular burner, the other was large square burners, and the other was rectangular burners, having the aspect ratio ranging from 1 to 6. A refined empirical model on the apparent flame heights of the inclined flames modified by heat release rate and aspect ratio of fire source was presented. We also developed an empirical model of the flame tilt angles based on the balance of mass between the fluxes given by the upward hot current and the crosswinds. These models are correlations with respect to dimensionless heat release rates, Froude numbers and aspect ratios of fire sources. The values of empirical coefficients and exponents of the correlations were derived from the experimental results.

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Experimental study of fire growth in a reduced-scale compartment under different approaching external wind conditions

Huang

Ooka

Liu

et al. 2009

Fire Safety Journal

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Theoretical Approach on Flame Tilt Based on Apparent Flame Heights in Free Boundaries

Cited by 5 publications

References 9 publications

Fire Plume Ejected from an Opening in nconfined Space Part 3 Behavior of Fire Plume Ejected from an Opening in the Vicinity of Opposed Walls

Fire Plume Ejected from an Opening in nconfined Space Part 3 Behavior of Fire Plume Ejected from an Opening in the Vicinity of Opposed Walls

Effect Of Cross-Winds To Apparent Flame Height And Tilt Angle From Several Kinds Of Fire Source

Experimental study of fire growth in a reduced-scale compartment under different approaching external wind conditions

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