Nonlocal flow effects in bushfire spread rates

Dold, J. W.; Zinoviev, A.; Weber, R. O.

doi:10.1016/j.foreco.2006.08.129

Cited by 8 publications

(8 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In wind driven grass fires, fire spread rates were found to be dependent on the length of the ignition for lines shorter than 50-75 m [56] and required longer acceleration times for higher winds (Figure 4). Experiments and modeling by Wotton et al [58] for fires in red pine litter, however, showed no increase in radiation from flames for ignition lines longer than about 2 m and no effect of line width on spread rate beyond about 1 m. Dold et al [59] offered an explanation for fire size effect on forward spread rate. As fires expand in two dimensions, the distance between the fire edges increases, meaning that buoyancyinduced inflow along segments of flaming front comes from a wider area.…”

Section: Length Of Fire Frontmentioning

confidence: 97%

A Review of Fire Interactions and Mass Fires

Finney

McAllister

2011

Journal of Combustion

View full text Add to dashboard Cite

The character of a wildland fire can change dramatically in the presence of another nearby fire. Understanding and predicting the changes in behavior due to fire-fire interactions cannot only be life-saving to those on the ground, but also be used to better control a prescribed fire to meet objectives. In discontinuous fuel types, such interactions may elicit fire spread where none otherwise existed. Fire-fire interactions occur naturally when spot fires start ahead of the main fire and when separate fire events converge in one location. Interactions can be created intentionally during prescribed fires by using spatial ignition patterns. Mass fires are among the most extreme examples of interactive behavior. This paper presents a review of the detailed effects of fire-fire interaction in terms of merging or coalescence criteria, burning rates, flame dimensions, flame temperature, indraft velocity, pulsation, and convection column dynamics. Though relevant in many situations, these changes in fire behavior have yet to be included in any operational-fire models or decision support systems.

show abstract

Section: Length Of Fire Frontmentioning

confidence: 97%

A Review of Fire Interactions and Mass Fires

Finney

McAllister

2011

Journal of Combustion

View full text Add to dashboard Cite

show abstract

“…The reader should note that the fire front generated by a surface fire itself also induces entrainment winds, see Dold et al (2006), and Mell et al (2007). However, as in all of the simpler wildfire models to date, except for that of Dold, the fireline entrainment winds have not been taken into account.…”

Section: A Simple Model For Wui Surface-fire Spread Plume Model Of Baum and Mccaffreymentioning

confidence: 99%

Mathematical modeling of wildland-urban interface fires

Rehm¹,

McDermott²

2011

View full text Add to dashboard Cite

Certain trade names or company products are mentioned in the text to specify adequately the experimental procedure and equipment used. In no case does such identification imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the equipment is the best available for the purpose.Regarding Non-Metric Units: The policy of the National Institute of Standards and Technology is to use metric units in all its published materials. To aid the understanding of this report, in most cases, measurements are reported in both metric and U.S. customary units.

show abstract

“…The reader should note that the fire front generated by a surface fire itself also induces entrainment winds (see Dold et al 2006;Mell et al 2007). However, as in all of the simpler wildfire models to date, except for that of Dold, the fireline entrainment winds have not been taken into account.…”

Section: A Simple Model For Wui Surface-fire Spread Plume Model Of Bamentioning

confidence: 99%

A simple model for wind effects of burning structures and topography on wildland–urban interface surface-fire propagation

Rehm

Mell

2009

Int. J. Wildland Fire

View full text Add to dashboard Cite

The present paper presents a simple model to demonstrate the effect on grass-fire propagation of the winds induced by structural fires in a wildland–urban interface setting. The model combines an empirical formula for wind-driven grass-fire spread and a physics-based analytical solution to the Euler equations to determine the ground-level wind produced by the burning structure. The scaling of the wind is based on the heat release rate of the structural fire as well as other parameters. Also considered are an ambient wind and a topographical wind, assumed to be proportional to the ground slope. Data on grass and structure fires required by the model are discussed. Fire front propagation predicted by this model is illustrated by three examples: a front passing a single burning structure on flat terrain, a front passing a burning structure on a hill, and a front passing several burning structures. The model predicts that a fire front will be accelerated toward the burning structure upon approach and decelerated after passing the structure. Several burning structures multiply the effects of an individual burning structure.

show abstract

Nonlocal flow effects in bushfire spread rates

Cited by 8 publications

References 3 publications

A Review of Fire Interactions and Mass Fires

A Review of Fire Interactions and Mass Fires

Mathematical modeling of wildland-urban interface fires

A simple model for wind effects of burning structures and topography on wildland–urban interface surface-fire propagation

Contact Info

Product

Resources

About