標題: Reduction of particle reentrainment using porous fence in front of dust samples
作者: Huang, CH
Lee, CI
Tsai, CJ
環境工程研究所
Institute of Environmental Engineering
公開日期: 1-Dec-2005
摘要: Wind tunnel experiments were conducted to measure the emission factor of particle reentrainment from a dust sample with or without a porous fence. The effect of wind velocity, fence porosity, and distance between the fence and the dust sample on the emission factor was studied. A 20% porous fence was found to be effective for reducing the particle reentrainment at a low wind velocity of 5 m/s. When the wind velocity was increase from 7 to 15 m/s, the results show that the particle reentrainment can also be reduced in a certain region behind the fence (x/H<4, x=distance between fence and sample; H=fence height) for the 20% porous fence. A linear multivariable regression model was fitted to the logarithmically transformed experimental data. The good fit of the regression model makes it possible to estimate emission rate as a function of the dimensionless distance (x/H), the wind velocity, and the elapsed time.
URI: http://dx.doi.org/10.1061/(ASCE)0733-9372(2005)131:12(1644)
http://hdl.handle.net/11536/13024
ISSN: 0733-9372
DOI: 10.1061/(ASCE)0733-9372(2005)131:12(1644)
期刊: JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE
Volume: 131
Issue: 12
起始頁: 1644
結束頁: 1648
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