Vertical dispersion of dust particles in a turbulent boundary layer
文献类型：期刊论文
| 作者 | Wang, H. T.1,2; Zhou, Y. H.1,2; Dong, Z. B.3; Ayrault, M.4 |
| 刊名 | EARTH SURFACE PROCESSES AND LANDFORMS
 |
| 出版日期 | 2008-07-01 |
| 卷号 | 33期号:8页码:1210-1221 |
| 关键词 | dust dispersion suspension saltation concentration |
| ISSN号 | 0197-9337 |
| DOI | 10.1002/esp.1608 |
| 通讯作者 | Wang, H. T.(htwang@lzb.ac.cn) |
| 英文摘要 | The flow of glass dust particles in air was investigated experimentally over a flat bed in a wind tunnel. Particle concentrations were measured by light scattering diffusion (LSD) and digital image processing. It was verified that saltation is the main mechanism for ejection of dust particles. Vertical mean dust concentrations for 'pure dust' and two mixtures of dust and saltating glass particles were determined and analysed. The experiments confirmed that for the 'pure dust' configuration the mean concentration decreases as a power function with height. For the mixture configurations and for free stream velocities close to the threshold velocity, the mean concentration also decreases in a power function. For higher velocities, mean concentration decreases respectively as a power function or exponential function for large and small ratios of the dust:saltating particles respectively. The exponent of the power law reflects the dust:particle ratio and the free stream flow velocity. Copyright (C) 2007 John Wiley & Sons, Ltd. |
| 收录类别 | SCI |
| WOS关键词 | WIND-TUNNEL EXPERIMENTS ; REGION NEGEV DESERT ; CONCENTRATION-PROFILE ; DRY DEPOSITION ; SALTATION ; TRANSPORT ; EROSION ; LOESS ; ACCUMULATION ; SUSPENSION |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000258044700004 |
| 出版者 | WILEY-BLACKWELL |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556094 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wang, H. T. |
| 作者单位 | 1.Lanzhou Univ, Minist Educ China, Key Lab Mech Western Disaster & Environm, Lanzhou 730000, Gansu, Peoples R China 2.Lanzhou Univ, Dept Mech, Lanzhou 730000, Gansu, Peoples R China 3.CAS, CAREERI, Key Lab Desert & Desertificat, Lanzhou, Gansu, Peoples R China 4.ECL, CNRS, Lab Mecan Fluides & Acoust, UMR 5509, Ecully, France |
| 推荐引用方式 GB/T 7714 | Wang, H. T.,Zhou, Y. H.,Dong, Z. B.,et al. Vertical dispersion of dust particles in a turbulent boundary layer[J]. EARTH SURFACE PROCESSES AND LANDFORMS,2008,33(8):1210-1221. |
| APA | Wang, H. T.,Zhou, Y. H.,Dong, Z. B.,&Ayrault, M..(2008).Vertical dispersion of dust particles in a turbulent boundary layer.EARTH SURFACE PROCESSES AND LANDFORMS,33(8),1210-1221. |
| MLA | Wang, H. T.,et al."Vertical dispersion of dust particles in a turbulent boundary layer".EARTH SURFACE PROCESSES AND LANDFORMS 33.8(2008):1210-1221. |
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来源：寒区旱区环境与工程研究所
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