| 受限空间近壁烟羽流准稳态温度场的实验研究 |
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| 引用本文： | 张人杰,袁理明,楼建宇.受限空间近壁烟羽流准稳态温度场的实验研究[J].火灾科学,1993,2(2):1-5. |
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| 作者姓名： | 张人杰 袁理明 楼建宇 |
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| 作者单位： | 中国科技大学北京研究生院，中国科学技术大学，中国科学技术大学 北京，合肥 230026，合肥 230026 |
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| 摘 要： | 本文研究了受限空间近壁烟羽流的准稳态温度场。实验结果表明水平横截面上的温度分布近似于高斯分布,最高温度与到火源的距离之间的关系近似于非受限烟羽流中二者之间的关系,但两个系数不同。本实验得到c=7.3,n=-1.62。实验中还发现,当烟羽流的葛拉晓夫数Gr<2×10~(-7)时,烟羽流处于不稳定状态,同时给出了处于不稳定状态时的温度分布。
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| 关 键 词： | 烟羽流 浮力 温度场 受限空间 |
| 收稿时间： | 1992/12/15 0:00:00 |
Experimental Study on the Temperature Field of a Buoyant Plume |
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| ZHANG Ren-jie,YUAN Li-ming and LOU Jian-yu.Experimental Study on the Temperature Field of a Buoyant Plume[J].Fire Safety Science,1993,2(2):1-5. |
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| Authors: | ZHANG Ren-jie YUAN Li-ming and LOU Jian-yu |
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| Institution: | The Graduate School of USTC,Beijing;University of Science and Technology of China;University of Science and Technology of China |
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| Abstract: | An experiment study of temperature distribution of quasi-steady state gas plume which is near the wall in bounded space, has been done. The experiment result shows that the temperature distribution on horizontal cross section approximate to Gaussens distribution. Relationship between maximum temperature on hor/zontal cross section and height from fire source approximate relationship of unbounded gas plume, but c=7.3, n=-1.62. When Grashof number is below 2×10~7, the gas plume must have instability. |
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| Keywords: | Plume Bouyant |
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