摘要
为研究某剧院休息厅的自然排烟效果的问题,根据建筑特征设计6个火灾场景。运用理论计算和数值模拟的方法,分别研究不同开窗位置、开窗面积以及环境风速对火灾时的热流场和烟气蔓延的影响。结果表明:不同开窗位置达到临界值的时间为顶窗>东西立面侧窗>北立面侧窗;有风条件下3.5%的开窗面积的排烟效果和无风时6%的开窗面积的排烟效果相当。结论是考虑当地环境风速,选择顶部5%和东西侧3.5%开窗方式,增强该剧院的自然排烟效果。
In order to study problem on the effect of natural smoke exhaust,6 fire scenarios according the features of theater lounge.Theoretical calculation and numerical simulation methods were applied to study the influence on thermal flow field and smoke propagation by the different location,area of windows and the environmental wind spead.Results were as follows： the time when reaching a critical valve of different position windowsshowed Ttop Teast,west Tnorth.With external winds,the natural smoke exhaust effect of 3.5% window open area was equal to 6.0% window area without wind.Considering the environmental winds,5% top window and 3.5% east-west window mode was selected to enhance the effect of natural smoke in theater lounge.
出处
《中国安全生产科学技术》
CAS
北大核心
2011年第11期24-29,共6页
Journal of Safety Science and Technology
关键词
剧院火灾
数值模拟
自然排烟
环境风
theater fire
numerical simulation
natural smoke exhaust
environmental winds
