| A simple plume model induced by stack effect in a vertical shaft |
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| 作者姓名： | Zhang Jingyan Lu Weizhen Huo Ran |
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| 作者单位： | Zhang Jingyan(Institute of Building Fire Research, China Academy of Building Research, Beijing 100013, China);Lu Weizhen(Department of Building and Construction, City University of Hong Kong, HKSAR, PRC);Huo Ran(State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China) |
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| 摘 要： | After comparing the mechanism of tilted plume under stack effect with that of spill plume,the tilted plume model induced by stack effect in a vertical shaft is developed simply based on the theoretical results and a series of full-scale tests. It is shown that the two sides of plume are symmetrical and have an accordant regulation that the plume radius has a linear relation to the height z. The profile of fire plume under stack effect is similar to the windblown flame in wind tunnel,and the range of flame deflection angle is about from 50 to 60 degree.
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| 关 键 词： | 诱导效应 烟羽 竖井 保存 模型 开发效果 线性关系 栈溢出 |
| 收稿时间： | 7/1/2008 12:00:00 AM |
| 修稿时间： | 9/27/2008 5:14:37 PM |
A simple plume model induced by stack effect in a vertical shaft |
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| Zhang Jingyan,Lu Weizhen,Huo Ran.A simple plume model induced by stack effect in a vertical shaft[J].Engineering Sciences,2009,7(3):35-41. |
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| Authors: | Zhang Jingyan Lu Weizhen Huo Ran |
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| Institution: | [1]Institute of Building Fire Research, China Academy of Building Research, Beijing 100013, China [2]Department of Building and Construction, City University of Hong Kong, HKSAR, PRC [3]State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | After comparing the mechanism of tilted plume under stack effect with that of spill plume, the tilted plume model induced by stack effect in a vertical shaft is developed simply based on the theoretical results and a series of full scale tests. It is shown that the two sides of plume are symmetrical and have an accordant regulation that the plume radius has a linear relation to the height z. The profile of fire plume under stack effect is similar to the windblown flame in wind tunnel, and the range of flame deflection angle is about from 50 to 60 degree. |
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| Keywords: | stack effect tilted plume profile plume radius flame deflection angle air entrainment |
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