| 井巷污染物横向紊流扩散系数的研究 |
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| 引用本文： | 李恩良,王秉权.井巷污染物横向紊流扩散系数的研究[J].东北大学学报(自然科学版),1986(1). |
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| 作者姓名： | 李恩良 王秉权 |
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| 作者单位： | 东北工学院通风安全研究室
(李恩良)，东北工学院通风安全研究室(王秉权) |
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| 摘 要： | 假设井巷紊流传质中质量传递和动量传递相似,借助紊流传递理论,考虑问题的物理意义,导出了井巷污染物横向紊流扩散系数K_y及其断面平均值K_y其中α、α,和R_e分别是井巷半径,摩擦阻力系数、断面平均风速和Reynolds数,r是横向尺寸,实验室风峒试验结果和理论值相当吻合,试验满足Reynolds相似。
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| 关 键 词： | 矿井通风、紊流扩散 扩散系数 |
Study on Diffusion Coefficient of the Transverse Turbulence of Pollutant in Mine Tunnel |
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| Li Enliang and Wang Bingquan.Study on Diffusion Coefficient of the Transverse Turbulence of Pollutant in Mine Tunnel[J].Journal of Northeastern University(Natural Science),1986(1). |
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| Authors: | Li Enliang and Wang Bingquan |
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| Institution: | Li Enliang and Wang Bingquan |
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| Abstract: | Suppose that the mass transefr and the momentum transfer are analogous in the mine turbulence. By means of the theory of turbulent transfer with considering its physical sense,Ky (the diffusion coefficient of transverse turbulence of the pollutant in mine tunnel)and Ky (the average value of the coefficient on cross section)can be obtained as follows.where a=the radius of mine tunnelU = the average velocity of the wind on cross sectiona = the friction factor Re = the Reynolds' numberr = the transverse dimensionThere is very satisfactory agreement between the theoretical value and the experimental result in a long wind tunnel. The experiment is satisfied with the Reynolds'analogy. |
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| Keywords: | mine vcntilation turbulent diffusion diffusion coefficient |
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