Experimental determination of saltating glass particle dispersion in a turbulent boundary layer
文献类型：期刊论文
| 作者 | Wang, H. T.; Zhang, X. H.; Dong, Z. B.; Ayrault, M. |
| 刊名 | EARTH SURFACE PROCESSES AND LANDFORMS
 |
| 出版日期 | 2006-12-01 |
| 卷号 | 31期号:14页码:1746-1762 |
| 关键词 | saltation dispersion solid particles concentration turbulence |
| ISSN号 | 0197-9337 |
| DOI | 10.1002/esp.1376 |
| 通讯作者 | Wang, H. T.() |
| 英文摘要 | A horizontal saltation layer of glass particles in air is investigated experimentally over a flat bed and also over a triangular ridge in a wind tunnel. Particle concentrations are measured by light scattering diffusion (LSD) and digital image processing, and velocities using particle image velocimetry (PIV). All the statistical moments of the particle concentration are determined such as mean concentration, root mean square concentration fluctuations, skewness and flatness coefficients. Over the flat bed, it is confirmed that the mean concentration decreases exponentially with height, the mean dispersion height being a significant length scale. It is shown that the concentration distribution follows quite well a lognormal distribution. Over the ridge, measurements were made at the top of the ridge and in the cavity region and are compared with measurements without the ridge. On the hill crest, particles are retarded, the saltation layer decreases in thickness and concentration is increased. Downwind of the ridge, particle flow behaves like a jet, in particular no particle return flow is observed. Copyright (c) 2006 John Wiley & Sons, Ltd. |
| 收录类别 | SCI |
| WOS关键词 | WIND-TUNNEL ; AEOLIAN SALTATION ; SAND TRANSPORT ; POROUS FENCES ; SURFACE ; CLOUD ; FLOW ; BED ; ENTRAINMENT ; VELOCIMETRY |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000243346200002 |
| 出版者 | JOHN WILEY & SONS LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555760 |
| 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.Ecole Cent Lyon, CNRS, UMR 5509, Lab Mecan Fluides & Acoust, F-69131 Ecully, France 2.Chinese Acad Sci, CAREERI, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, H. T.,Zhang, X. H.,Dong, Z. B.,et al. Experimental determination of saltating glass particle dispersion in a turbulent boundary layer[J]. EARTH SURFACE PROCESSES AND LANDFORMS,2006,31(14):1746-1762. |
| APA | Wang, H. T.,Zhang, X. H.,Dong, Z. B.,&Ayrault, M..(2006).Experimental determination of saltating glass particle dispersion in a turbulent boundary layer.EARTH SURFACE PROCESSES AND LANDFORMS,31(14),1746-1762. |
| MLA | Wang, H. T.,et al."Experimental determination of saltating glass particle dispersion in a turbulent boundary layer".EARTH SURFACE PROCESSES AND LANDFORMS 31.14(2006):1746-1762. |
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来源：寒区旱区环境与工程研究所
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