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Experimental study of the effect of water mist on CH_4/air non-premixed flames

机译：水雾对CH_4 /空气非预混火焰效果的实验研究

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Water mist for fire suppression and control has received considerable attention as one of the potential methods for halon replacement. Spatially resolved information on volume mean diameter and coordinate component velocity of water mist has been obtained in two type fine mist, using LDA/APV System. A series of experimental study has been conducted to explore the CH_4/air fire suppression effectiveness of water mist. The results show that Water mist consisting of 10-100μm water droplets is an effective flame suppressant in a co-flow cup burner flame. The diameter and mass fraction of water mist significantly affects the temperature distribution of the methane CH_4/air flame. The effect of oxygen dilution is more prominent in the upper part of the flame, whereas, endothermic heat exchange with the droplets plays a critical role in the lower half of the diffusion flame.
机译：灭火和控制的水雾已经受到相当大的关注，因为哈隆替代的潜在方法之一。使用LDA / APV系统，在两种型细雾中获得了关于水雾的体积平均直径和坐标分量速度的空间分辨信息。已经进行了一系列实验研究以探索水雾的CH_4 /空气灭火有效性。结果表明，由10-100μm水滴组成的水雾是融合杯燃烧器火焰中有效的火焰抑制剂。水雾的直径和质量分数显着影响甲烷CH_4 /空气火焰的温度分布。氧气稀释的效果在火焰的上部更加突出，而与液滴的吸热热交换在扩散火焰的下半部分中起着关键作用。

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