| 单侧不对称补气对大空间火灾机械排烟的影响 |
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| 引用本文： | 易亮,霍然,李元洲,彭磊. 单侧不对称补气对大空间火灾机械排烟的影响[J]. 中国科学技术大学学报, 2003, 33(5): 579-585 |
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| 作者姓名： | 易亮 霍然 李元洲 彭磊 |
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| 作者单位： | 中国科学技术大学火灾科学国家重点实验室,安徽,合肥,230026 |
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| 基金项目： | 国家重点基础研究发展规划项目 (2 0 0 1CB40 960 4) |
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| 摘 要： | 采用全尺寸实验和数值模拟两种方法对大空间火灾单侧不对称补气条件下的机械排烟进行了分析．通过分析起火空间的温度分布讨论了烟气层的形成、沉降以及机械排烟的效果．在单侧不对称补气的条件下，烟气与新鲜空气掺混加剧，并沿补气口对面的墙壁下降，使机械排烟达不到理想的效果．
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| 关 键 词： | 大空间火灾 机械排烟 单侧补气 全尺寸实验 场模拟计算 |
| 文章编号： | 0253-2778(2003)05-0579-07 |
Study on the Effect of Unsymmetric Air Supply to Mechanical Exhaust in Large Space Fire |
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| YI Liang,HUO Ran,LI Yuan-zhou,PENG Lei. Study on the Effect of Unsymmetric Air Supply to Mechanical Exhaust in Large Space Fire[J]. Journal of University of Science and Technology of China, 2003, 33(5): 579-585 |
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| Authors: | YI Liang HUO Ran LI Yuan-zhou PENG Lei |
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| Abstract: | Full-scale burning test and numerical simulation were carried out to investigate the mechanical exhaust in large space fire with one-side unsymmetrical air supply. By observing the temperature distribution of the large space as the dominated factor, the formation and descending of the smoke layer and the efficiency of mechanical exhaust is discussed. Under the condition of air supply, due to the stronger blend of smoke and fresh air and the descent of smoke downwards the opposite side of the vents for air supply, the efficiency of mechanical exhaust is reduced and cannot reach the expected result for smoke control designed using the ideal two-zone model. |
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| Keywords: | large space fire mechanical exhaust one-side air supply full-scale burning test numerical simulation |
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