Scaling analysis of downstream heating and flow dynamics of fires over an inclined surface

Ren, Xingyu; Sluder, Evan; Heck, Michael V.; Grumstrup, Torben P.; Finney, Mark A.; Mäkiharju, Simo A.; Gollner, Michael J.

doi:10.1016/j.combustflame.2022.112203

Cited by 11 publications

(1 citation statement)

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“…They proposed a new weighted multi-point source model, which accurately predicts the radiant heat flux at the target point when deviating from the center line of the two-cell fire, in comparison to the single-point source model. Ren et al [13] conducted experimental studies investigating the downstream heating and flow dynamics induced by flames on inclined surfaces. The experimental results demonstrated that when the surface slope angle reached 18°, flame-wall attachment phenomena began to occur, regardless of the fireline intensity.…”

Section: Introductionmentioning

confidence: 99%

Thermal Characteristics of Surface Fire Spreading Front Under Ambient Wind

Wang,

Zhou,

et al. 2024

ACETR

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Surface fire is the most common form of forest fire, primarily spreading along the forest land's surface and causing damage to nearby low-lying seedlings, shrubs, and the root systems of vegetation at its base. In actual forest fire scenarios, the occurrence of fires is often accompanied by environmental winds due to the typically complex terrain in forested areas. Forest vegetation is densely distributed, and when surface fires encounter obstacles such as tree trunks, the advancing fire front may interact with the tree trunks under the influence of environmental winds. This study focuses on understanding the thermal characteristics of the interaction between the advancing fire front and tree trunks in the presence of environmental winds. To investigate this interaction, temperature measurements are conducted on both sides of the obstacles and in the downstream region of the flame. Additionally, measurements of radiant heat flux are taken in the upper space above the experimental setup. By analyzing flame morphology parameters and experimental measurements, trends in thermal characteristic parameters with spatial position are identified. Regression formulas are developed to describe the temperature difference between the windward and leeward sides of the obstacles and the height above the experimental platform. Furthermore, the influence of flame climbing on radiant heat transfer in the upper space is discussed.

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Section: Introductionmentioning

confidence: 99%