| 煤粉尘扩散规律及扩散系数 |
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| 引用本文： | 王献孚,楼宇娟.煤粉尘扩散规律及扩散系数[J].实验流体力学,1990(2). |
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| 作者姓名： | 王献孚 楼宇娟 |
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| 作者单位： | 武汉水运工程学院
(王献孚)，武汉水运工程学院(楼宇娟) |
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| 摘 要： | 本文通过风洞试验对煤堆垛起尘后落尘分布的分析,确认降尘的正态分布规律有一定近似性;通过对煤堆垛起尘后落尘分布的粒径分析,发现起尘量中粒径谱分布与堆料中粒径谱分布有很大区别,并获得具有一定规律的初步关系。这对改善煤粉尘大气污染预报的精度有实际意义。本文首次在风洞中测得若干种当量直径的煤粒子在大气中横向扩散系数的统计公式,并对其合理性作了间接的验证。
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| 关 键 词： | 煤粉尘扩散 扩散系数 风洞试验 |
THE DISPERSION OF COAL DUST AND ITS DIFFUSION COEFFICIENT |
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| Wang Xianfu,Lou Yujuan.THE DISPERSION OF COAL DUST AND ITS DIFFUSION COEFFICIENT[J].Experiments and Measur in Fluid Mechanics,1990(2). |
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| Authors: | Wang Xianfu Lou Yujuan |
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| Institution: | Wuhan University of Water TransPortation Engineering |
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| Abstract: | It is confirmed that-the dispersion of small coal particles in the far field region is near to the gaussian model,then thesimplest gaussian plume model can be used to predicate the dispersionin the far field for small particles from a stockpile.It is of interestto note that the distribution of coal dust diameters will make a greatdifference between,the entrainment from the stockpile and the proto-type stockpile.We are the first to measure the coal dust dispersion from stock-pile in the wind tunnel,and obtain the formulas of the diffusion coef-ficients for different diameters of coal particles,also the results arecompared with the actual data. |
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| Keywords: | environmental engineering coal particle dispersion diffusion coefficient wind tunnel test |
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