Controlling Mechanisms of Flame Spread

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説明

Recent advances in the experimental study of the mechanisms controlling the spread of flames over the surface of combustible solids are summarized in this work. The heat transfer and gas phase chemical kinetic aspects of the flame spread process are addressed separately for the spread of flames in oxidizing flows that oppose or concur with the direction of propagation. The realization that in most practical situations, the spread of fire in opposed flows occurs at near extinction or non-propagation conditions is particularly significant. Under these circumstances, gas phase chemical kinetics plays a critical role and it must be considered if realistic descriptions of the flame spread process are attempted. In the concurrent mode of flame spread, heat transfer from the flame to the unburnt fuel appears to be the primary controlling mechanism. Although gas phase chemical kinetics is unimportant in the flame spread process, it is important in the establishment and extension of the diffusion flame that generates the spread process. The current experimental observations, although still in need of further verification, provide insight toward the development of accurate descriptions of the flame spread process.

収録刊行物

  • Fire Science and Technology

    Fire Science and Technology 2 (1), 17-54, 1982

    東京理科大学 総合研究機構 火災科学研究センター

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