Heat transfer and fire spread /

Anderson, H. W.

doi:10.5962/bhl.title.69024

Cited by 79 publications

(89 citation statements)

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“…The constants A and B (Eq.2) vary from one study to the other as follows: A = 75600, B = 1 in [2], A = 208487, B = 1.236 in [3]. The consequence of the relationship found in [2] is that the time characterizing the travel of the fire front depends only on the geometrical characteristics of the solid fuel particles composing the vegetation layer.…”

Section: Introductionmentioning

confidence: 98%

“…The consequence of the relationship found in [2] is that the time characterizing the travel of the fire front depends only on the geometrical characteristics of the solid fuel particles composing the vegetation layer. The fact that the exponent B is different from unity in [3] suggests that another length scale, in addition to the fuel particles thickness, may affect the fire residence time.…”

Section: Introductionmentioning

confidence: 99%

“…The fact that the exponent B is different from unity in [3] suggests that another length scale, in addition to the fuel particles thickness, may affect the fire residence time. In the same paper [3], the author suggests that other heat transfer mechanisms (such as convection) can also affect this characteristic time and consequently the volume fraction (α S ) must also affect the constant A in equation (2).…”

Section: Introductionmentioning

confidence: 99%

“…In one of the most used fire spread models (Behave) this parameter affects, at different levels, the rate of spread (ROS) of the fire: the fraction of the heat release by the fire compared to the heat flux absorbed by the solid fuel layer, and the exponent representing the effect of the wind speed [1]. For fires propagating under a zero wind condition, small scale experiments carried out in pine needles [2] fuel beds and in eucalypt forest fuels [3], have shown that the fire residence time and the SA/V were related as follows:…”

Section: Introductionmentioning

confidence: 99%

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Impact of solid fuel particle size upon the propagation of a surface fire through a homogeneous vegetation layer

Morvan¹,

Lamorlette²

2014

Fire Saf. Sci.

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The aim of this paper is to investigate the role played by the size (thickness) of solid fuel particles upon both the heat transfer and the propagation of a surface fire through a homogeneous vegetation layer. Because all the interactions (mass, momentum, and heat transfer) between the solid fuel layer and the gas phase occur at the interface between these two media, the surface area to volume (SA/V) ratio (inversely proportional to the thickness of the solid fuel particles), which appears in the expression of the specific surface separating these two phases, must affect, more or less significantly, the fire dynamics. This problem has been studied numerically, using a multiphase formulation. Various variables, such as the temperature of the solid fuel, the temperature of the gas, the fire residence time and the heat flux by radiation and convection have been analyzed, in order to understand the role played by the SA/V upon the behaviour of the fire.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of solid fuel particle size upon the propagation of a surface fire through a homogeneous vegetation layer

Morvan¹,

Lamorlette²

2014

Fire Saf. Sci.

View full text Add to dashboard Cite

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“…The average reduction in fuel particle diameters for fine and coarse fuels was calculated and used to estimate flame residence time (Anderson 1969, Harmathy 1976, T (minutes), where R T = 3.15Ad, R…”

Section: Methodsmentioning

confidence: 99%