| 预测火灾情况下竖井中性面位置的连续模型 |
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| 引用本文： | 许晓元,李元洲,毛少华,阳东.预测火灾情况下竖井中性面位置的连续模型[J].燃烧科学与技术,2011,17(4):375-381. |
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| 作者姓名： | 许晓元 李元洲 毛少华 阳东 |
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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,合肥,230027 |
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| 基金项目： | 安徽省自然科学基金资助项目 |
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| 摘 要： | 针对竖井侧向连续开缝和竖井侧向连续开缝及上部开口两种情况,在Klote模型的基础上,根据竖井内温度在竖向上连续分布的特点,建立了预测火灾情况下竖井中性面高度的连续模型.通过计算流体力学模拟,将Klote模型、双区域模型及连续模型与模拟结果进行对比.结果表明,连续模型偏差最小；通过分析连续模型计算结果可知,中性面高度受火...
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| 关 键 词： | 竖井 中性面 烟气运动 烟囱效应 计算流体力学 |
Model for Neutral-Plane Location in Shaft in Fire |
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| XU Xiao-yuan,LI Yuan-zhou,MAO Shao-hua,YANG Dong.Model for Neutral-Plane Location in Shaft in Fire[J].Journal of Combustion Science and Technology,2011,17(4):375-381. |
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| Authors: | XU Xiao-yuan LI Yuan-zhou MAO Shao-hua YANG Dong |
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| Affiliation: | XU Xiao-yuan,LI Yuan-zhou,MAO Shao-hua,YANG Dong(State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230027,China) |
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| Abstract: | A model was proposed for determining the location of neutral-plane in a shaft with a continuous side open-ing or with both a continuous side opening and a upper opening.Based on the Klote model,the new model was sim-plified according to the temperature distribution inside the shaft in fire.A numerical study was also carried out by us-ing a computational fluid dynamics(CFD).The results prove that the new model is in good agreement with the simu-lation results. |
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| Keywords: | shaft neutral-plane smoke movement stack effect computational fluid dynamics |
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