In order to improve the applicability of water mist curtain smoke-resistance, the structure of traditional water mist shower head and the layout of nozzle were optimized.FDS was applied to simulate the gas flow characteristics within corridor before and after the water mist curtain being improved.The results demonstrated that, after the nozzle optimization, the water mist curtain intensifies the smoke side air circulation;CO downstream was inhibited, and the inhibitory effect was better than normal water mist curtain;The water mist curtain after the nozzle is optimized can offer the cooling rate 4 ℃ greater than that of the traditional.Neither the traditional nor the optimized water mist curtain can obstruct CO spreading to downstream, while the optimized curtain can lower the CO volume fraction downstream the corridor.%为提高细水雾幕在挡烟方面的适用性,对传统细水雾喷头结构、喷嘴布局进行了优化.运用FDS对优化前后细水雾幕作用下走廊内烟气流动特性进行数值模拟.结果表明,喷头优化后,细水雾幕加剧了挡烟侧的空气环流,抑制CO向下游迁移,抑制效果优于普通水雾幕;下游温度比优化前大为降低,降温幅度达4 ℃左右;优化前后细水雾幕均无法隔断CO蔓延,但优化后的水雾幕能降低走廊下游的CO体积分数.
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