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Numerical Simulation of Airflow Structure and Dust Emissions behind Porous Fences Used to Shelter Open Storage Piles
Song, CF (Song, Chong-Fang)[ 1 ]; Peng, L (Peng, Lin)[ 1 ]; Cao, JJ (Cao, Jun-Ji)[ 2 ]; Mu, L (Mu, Ling)[ 1 ]; Bai, HL (Bai, Hui-Ling)[ 1 ]; Liu, XF (Liu, Xiao-Feng)[ 1 ]
2014-10-01
发表期刊AEROSOL AND AIR QUALITY RESEARCH
卷号14期号:6页码:1584-1592
文章类型期刊论文
摘要

Porous fences can reduce dust emissions from storage piles in open storage yards, but their sheltering effect depends on the airflow structure around the pile, and the shear stress distribution on each surface. In this study, static flow fields were numerically simulated using k-epsilon standard The turbulence model; the shear stress characteristics and distribution on the windward side, flat-top surface, and leeward side of a typical prismatic material stack were analyzed. The distribution of the aerodynamic structure of each surface of the storage pile was determined according to the flow field data for fences of the porosities epsilon = 0, 0.2, 0.3, 0.4, 0.5, and 0.6. The results indicated that at low porosities (epsilon = 0, 0.2) a recirculating flow appeared in the region between the fence and the pile. The shear force acted downward the windward slope, and the maximum dust emission occurred at two-thirds the height of the windward side, rather than at the top, as in unfenced conditions. Using the porous fence simulated in this study, shear stress on the windward side and the flat-top surface first decreased, then increased with increasing porosity; the lowest porosity values were 0.2 and 0.3, and the shear stress on the prismatic leeside changed little with increasing porosity. The numerical predictions indicated that a fence with porosity between 0.2 and 0.3 is optimal.

关键词Computational Fluid Dynamics (Cfd) Open Storage Pile Dust Emission Porous Fence
DOI10.4209/aaqr.2013.11.0331
收录类别SCIE
语种英语
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9780
专题粉尘与环境研究室
通讯作者Peng, L (Peng, Lin)[ 1 ]
作者单位1.College of Environmental Science and Engineering, Taiyuan University of Technology, 79 Yingze West Street, Taiyuan030024, China;
2.Key Laboratory of Aerosol, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China
推荐引用方式
GB/T 7714
Song, CF ,Peng, L ,Cao, JJ ,et al. Numerical Simulation of Airflow Structure and Dust Emissions behind Porous Fences Used to Shelter Open Storage Piles[J]. AEROSOL AND AIR QUALITY RESEARCH,2014,14(6):1584-1592.
APA Song, CF ,Peng, L ,Cao, JJ ,Mu, L ,Bai, HL ,&Liu, XF .(2014).Numerical Simulation of Airflow Structure and Dust Emissions behind Porous Fences Used to Shelter Open Storage Piles.AEROSOL AND AIR QUALITY RESEARCH,14(6),1584-1592.
MLA Song, CF ,et al."Numerical Simulation of Airflow Structure and Dust Emissions behind Porous Fences Used to Shelter Open Storage Piles".AEROSOL AND AIR QUALITY RESEARCH 14.6(2014):1584-1592.
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