| 中庭的形状系数与烟羽方程 |
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| 引用本文： | 刘方,刘勇,付祥钊.中庭的形状系数与烟羽方程[J].消防科学与技术,2004,23(4):306-308. |
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| 作者姓名： | 刘方 刘勇 付祥钊 |
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| 作者单位： | 重庆大学,城市建设与环境工程学院,重庆,400045 |
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| 基金项目： | 重庆大学基础及应用基础研究基金项目“大空间建筑物水喷淋与烟气层相互作研究” |
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| 摘 要： | 分析了我国中庭空间几何形状的实地终统计调查结果，提出了形状系数的概念，并根据形状系数大小对中庭进行了分类。针对国内较普遍的瘦高型中庭(形状系数小于0．4)，按1／8比例建造了中庭火灾相似模型实验台，开展了烟气填充与机械排烟实验研究，得到了适用于这类中庭的稳态火灾烟气填充方程与反映受限烟羽特点的烟羽质量流量方程。
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| 关 键 词： | 中庭建筑 形状系数 烟气流动 火灾 建筑空间 |
| 文章编号： | 1009-0029(2004)04-0306-03 |
| 修稿时间： | 2004年1月20日 |
Atrium shape factor and plume equations |
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| LIU Fang,LIU Yong,FU Xiang-zhao.Atrium shape factor and plume equations[J].Fire Science and Technology,2004,23(4):306-308. |
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| Authors: | LIU Fang LIU Yong FU Xiang-zhao |
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| Abstract: | Presents a survey of the geometrical shapes of the atrium spaces in China. A new concept, shape factor was introduced. And the types of atrium can be classified according to their shape factors. An experimental reduced-scale compartment, which is a 1/8-scale modeling of the Poly U/USTC atrium, is established. The experiments of smoke filling and mechanical exhaust during atrium fires are conducted. Based on experimental data, an equation for predicting the position of the smoke layer interface for high atrium with steady fire during smoke filling, and an equation for predicting plume mass flow rate, which shows the characteristic of confined plume, are obtained. |
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| Keywords: | atrium shape factor smoke movement |
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