低压环境下热薄固体燃料表面火焰传播实验研究

EXPERIMENTAL STUDIES ON FLAME SPREAD ACROSS THERMALLY THIN SOLID FUEL SURFACES UNDER LOWER AMBIENT PRESSURES

本文在地面环境和不同环境压力下,对热薄燃料表面的火焰传播进行了实验研究。结果表明在低压下火焰传播的速度对环境压力敏感,即火焰传播速度随着压力的降低而降低。在较高压力下火焰传播速度对环境压力不敏感,即火焰传播速度几乎不随着压力变化。在上述实验结果基础上,本文对热薄固体燃料表面在不同环境压力下的火焰传播机理进行了分析。

The ground experimental studies on flame spread across solid fuel surface were conducted under various ambient pressures. The results show that flame-spread rates are sensitive to ambient pressure and decreases as the ambient pressure decreases in a lower range of ambient pressures. But in a higher ambient pressure, the flame-spread rates are independent of ambient pressure. Based on the results, analyses of mechanisms of the flame spread across solid fuel surfaces in various ambient pressures were suggested in this paper.