The Relation of the Threshold Velocity of Coal Dust to Its Size and Humidity

Lin Duo-min; Tsai Shu-tang

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Article Navigation > Applied Mathematics and Mechanics > 1991 > 12(6): 485-490

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, 1991, 12(6): 485-490.

Citation:

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, 1991, 12(6): 485-490.

Citation:

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, 1991, 12(6): 485-490.

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The Relation of the Threshold Velocity of Coal Dust to Its Size and Humidity

Lin Duo-min^1,3,
Tsai Shu-tang^1,2

1.
Shanghai Inst, of Appl. Math, Mech., Shanghai Univ. of Tech., Shanghai;
2.
Dept. of Modern Mechanics, Univ. of Science & Tech. of China, Hefei;
3.
Shanghai Insi. of Appl. Math. Mech., Shanghai

Received Date: 1990-05-09
Publish Date: 1991-06-15

Abstract

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.
- atmosphere pollution,
- coal dust threshold velocity,
- raised dust pollution,
- dust raising pattern

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References(10)

References

[1]	Bagnold, FL, A,The Physics of Blown Sand and Dcscrt Dunes, Methuen&Co,Ltd, London(1941).
[2]	王宝章等,煤炭装卸、堆放起尘规律及煤尘扩散规律的研究,交通环保(水运版),2-3 (1988),1-9.
[3]	杨贺清,煤矿粉尘污染的风洞试验研究,交通环保(水运版).2-3 (1986), 10-17.
[4]	杨贺清等,煤炭装卸时起尘规律的试验研究,交通环保(水运版),2-3 (1986), 47-58.
[5]	刘琴等,露天煤矿堆和研石堆的起尘规律的研究,交通环保(水运版),2-3 (1986), 88-96.
[6]	朱景韩等,煤堆垛起尘风速的试验研究,交通环保(水运版),2-3 (1986), 71-76.
[7]	朱景韩等,静止煤贮存堆场的粉尘扩散规律研究,交通环保(水运版),2-3 (1986),77-80.
[8]	煤粉尘运动规律研究课题组,煤份主运动问题的试验研究,交通环保(水运版),2-3(1386),39-46.
[9]	王献孚,堆料起尘阳扩散规律的一些问题的研究,交通环保(水运版),2-3 (1986), 26-38.
[10]	江家骅等,朱家门煤码头环保对策研究,上海市环境保护科研所研究报告(1987).