| 水喷淋作用下烟气层稳定性的判据研究 |
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| 引用本文： | 张村峰,李元洲,霍然,王浩波.水喷淋作用下烟气层稳定性的判据研究[J].中国科学技术大学学报,2006,36(12):1325-1330. |
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| 作者姓名： | 张村峰 李元洲 霍然 王浩波 |
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| 作者单位： | 1. 中国科学技术大学火灾科学国家重点实验室,安徽合肥,230027;福州大学环境与资源学院,福建闽侯,350018
2. 中国科学技术大学火灾科学国家重点实验室,安徽合肥,230027 |
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| 基金项目： | 国家自然科学基金重点项目（50536030）资助. |
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| 摘 要： | 对水喷淋作用时液滴与烟气层的相互作用过程进行分析，采用单位体积液滴拖曳力与烟气浮力的比值作为参数，建立了水喷淋作用时烟气层稳定性的判断方法．采用FDS（fire dynamics simulator）进行模拟计算，对这一判据进行验证．结果表明，当该比值大于1时，烟气“拥塞”将发生；比值小于1时，烟气层将保持稳定．
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| 关 键 词： | 火灾烟气 稳定性 拖曳力 浮力 |
| 文章编号： | 0253-2778(2006)12-1325-06 |
| 收稿时间： | 03 14 2006 12:00AM |
| 修稿时间： | 04 24 2006 12:00AM |
On the criterium for smoke stability under sprinkler spray |
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| ZHANG Cun-feng,LI Yuan-zhou,HUO Ran,WANG Hao-bo.On the criterium for smoke stability under sprinkler spray[J].Journal of University of Science and Technology of China,2006,36(12):1325-1330. |
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| Authors: | ZHANG Cun-feng LI Yuan-zhou HUO Ran WANG Hao-bo |
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| Institution: | 1. The State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027,China; 2. College of Environment and Resources, Fuzhou University, Minhou 350018, China |
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| Abstract: | The interaction of sprinkler spray and smoke was discussed.A new criterium based on the ratio of local spray dragging force to local smoke buoyancy was proposed to analyze the stability of smoke under sprinkler spray.Some numerical studies by FDS(fire dynamics simulator) were conducted to validate the applicability of the criterium.It can be concluded that when the ratio is greater than 1,the smoke layer will lose the stability and smoke logging will happen;when the ratio is smaller than 1,the smoke layer will remain stable. |
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| Keywords: | fire smoke stability dragging force buoyancy |
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