| THE RELATION OF THE THRESHOLD VELOCITY OF COAL DUST TO ITS SIZE AND HUMIDITY |
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| 作者姓名： | 林多敏 蔡树棠 |
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| 作者单位： | Shanghai Inst. of Appl. Math，and Mech.，Shanghai Univ. of Tech.，Shanghai，Dept. of Modern Mechanics，Univ. of Science and Tech. of China，Hefei，Shanghai Inst. of Appl. Math，and Mech.，Shanghai |
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| 摘 要： | On the ground of wharf and a station where coal is piled up,the sources polluting theatmosphere are mainly the raised coal dust.According to the principle of mechanics,withthe consideration of the gravities of coal dust particles and liquid droplets,coal dust size andhumidity,under the condition of force balance when the coal dust was raised,the authorsobtained a theoretical formula for the threshold velocity of coal dust with humidity.Finally,the theoretical values from the formula gave a good agreement with the experimental datafrom some wind tunnels.
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| 收稿时间： | 9 May 1990 |
The relation of the threshold velocity of coal dust to its size and humidity |
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| Lin Duo-min,Tsai Shu-tang.THE RELATION OF THE THRESHOLD VELOCITY OF COAL DUST TO ITS SIZE AND HUMIDITY[J].Applied Mathematics and Mechanics(English Edition),1991,12(6):513-519. |
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| Authors: | Lin Duo-min Tsai Shu-tang |
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| Institution: | (1) Shanghai Inst. of Appl. Math. and Mech., Shanghai Univ. of Tech., Shanghai;(2) Dept. of Modern Mechanics, Univ. of Science and Tech. of China, Hefei |
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| Abstract: | On the ground of wharf and a station where coal is piled up, the sources polluting the atmosphere are mainly the raised coal dust. According to the principle of mechanics, with the consideration of the gravities of coal dust particles and liquid droplets, coal dust size and humidity, under the condition of force balance when the coal dust was raised, the authors obtaineda theoretical formula for the threshold velocity of coal dust with humidity,Finally, the theoretical values from the formula gave a good agreement with the experimental data from some wind tunnels. |
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| Keywords: | atmosphere pollution coal dust threshold velocity raised dust pollution dust raising pattern |
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