摘要
为研究走廊中常见烟气控制模式的效果,采用数值模拟与全尺寸长廊实验相结合的方法,对采用挡烟垂壁、机械排烟和空气幕等多种组合的防排烟模式的防排烟效果进行分析。比较各种模式下烟气的温度分布、质量分数分布以及烟气沉降时间,设计5种排烟模式。结果表明:防烟空气幕效果明显。采用前室部分加压并在前室门口设置防烟空气幕,同时开启两个排烟口的排烟模式具有最佳的烟气控制效果,其排烟效率达到74.52%。
The numerical simulation combined with the full size experiment has been used to analyze effect of common ,smoke control modes. The smoke-proof pendant wall, mechanical smoke exhaust and air curtain were used in these 5 modes. The smoke temperature distribution, mass fraction distribution, and smoke down time between these modes were compared. The results shown that smoke preventing air curtain and pressurization in atria, with two exhaust ports in aisle has the best smoke control effect, which has smoke removal efficiency about 74.52%.
出处
《消防科学与技术》
CAS
北大核心
2010年第1期33-36,共4页
Fire Science and Technology
基金
江苏省自然科学基金(BK2008369)
关键词
高层建筑
烟气控制
数值模拟
空气幕
挡烟垂壁
high-rise building
smoke control
numerical simulation
air curtain
smoke-proof pendant wall
