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 |
Appears in Collections: | Articles |
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