Reduction of Particle Reentrainment Using Porous Fence in Front of Dust Samples
Publication: Journal of Environmental Engineering
Volume 131, Issue 12
Abstract
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 . When the wind velocity was increase from 7 to , the results show that the particle reentrainment can also be reduced in a certain region behind the fence ( =distance between fence and sample; =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 , the wind velocity, and the elapsed time.
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Acknowledgments
The writers would like to thank the Taiwan National Science Council of the Republic of China for financial support under Contract No. UNSPECIFIEDNSC-89-EPA-Z-009-002.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 131 • Issue 12 • December 2005
Pages: 1644 - 1648
Copyright
© 2005 ASCE.
History
Received: Feb 23, 2004
Accepted: Apr 6, 2005
Published online: Dec 1, 2005
Published in print: Dec 2005
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