| 侧壁对受限空间烟羽流准稳态结构的影响 |
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| 引用本文： | 张人杰,袁理明.侧壁对受限空间烟羽流准稳态结构的影响[J].中国科学技术大学学报,1995(4). |
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| 作者姓名： | 张人杰 袁理明 |
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| 作者单位： | 中国科学技术大学北京研究生院，中国科学技术大学 |
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| 摘 要： | 本实验在１／２尺寸典型客房模拟实验间内进行实验结果表明，羽流轴线向靠近的壁面方向偏移，偏移距离δＴ和δｖ与热源相对靠近的壁面的距离ｙ和高度ｚ有关．沿近壁面方向羽流横截面的温度分布是近似高斯分布，垂直近壁面方向羽流横截面上的温度分布是截断高斯分布．然而，近壁面浮力羽流横截面上的速度分布偏离高斯分布，且分布曲线上出现双峰值，曲线中段比较平缓，表明受限空间浮力羽流不具有轴对称性，其结构与非受限空间浮力羽流不同．
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| 关 键 词： | 羽流，偏移距离，受限空间 |
The Quasi-Steady State Structure of the Buoyant Plume in a Confined Space Under the Side Wall Influence |
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| Zhang Renjie,Yuan Liming.The Quasi-Steady State Structure of the Buoyant Plume in a Confined Space Under the Side Wall Influence[J].Journal of University of Science and Technology of China,1995(4). |
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| Authors: | Zhang Renjie Yuan Liming |
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| Institution: | The Graduate School of University of Science and Technologe of China |
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| Abstract: | he quasi-steady saate structure of a near-wall buoyant plume induced by a weak fire is studied.The experimental results show that the axis of the buoyant plume inclines to the wall,and that the oblique distance of the buoyant plume is dependent on the fire position y and height z.The temperature distribution in a horizontal cross section of the plume is approximate to a Gaussian distribution along the x direction,and a trancated Gaussian distribution along the y direction.There are two peaks and a flat section on the central part of the velocity distribution. These show that the near wall buoyant plume in a confined space has a complex structrure. |
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| Keywords: | buoyant plume obligue distance confined space |
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