Experimental Investigation Of Particle Velocity Distributions In Windblown Sand Movement
文献类型：期刊论文
| 作者 | Kang LQ; Guo LJ; Liu DY(刘大有)
|
| 刊名 | Science In China Series G-Physics Mechanics & Astronomy
 |
| 出版日期 | 2008 |
| 页码 | 986-1000 |
| 通讯作者邮箱 | klq@sohu.com |
| 关键词 | Windblown Sand Movement Probability Distribution Particle Velocity Sediment-Transport Wind-Tunnel Blown Sand Surface Cloud Saltation Grains Model Flux |
| ISSN号 | 1672-1799 |
| 通讯作者 | Kang, LQ (reprint author), Xian Jiaotong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China. |
| 中文摘要 | With the PDPA (Phase Doppler Particle Analyzer) measurement technology, the probability distributions of particle impact and lift-off velocities on bed surface and the particle velocity distributions at different heights are detected in a wind tunnel. The results show that the probability distribution of impact and lift-off velocities of sand grains can be expressed by a log-normal function, and that of impact and lift-off angles complies with an exponential function. The mean impact angle is between 28 degrees and 39 degrees, and the mean lift-off angle ranges from 30 degrees to 44 degrees. The mean lift-off velocity is 0.81-0.9 times the mean impact velocity. The proportion of backward-impacting particles is 0.05-0.11, and that of backward-entrained particles ranges from 0.04 to 0.13. The probability distribution of particle horizontal velocity at 4 mm height is positive skew, the horizontal velocity of particles at 20 mm height varies widely, and the variation of the particle horizontal velocity at 80 mm height is less than that at 20 mm height. The probability distribution of particle vertical velocity at different heights can be described as a normal function. |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | SEDIMENT-TRANSPORT ; WIND-TUNNEL ; BLOWN SAND ; SURFACE ; CLOUD ; SALTATION ; GRAINS ; MODEL ; FLUX |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000257751400006 |
| 公开日期 | 2009-08-03 ; 2009-09-14 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/25962]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Kang LQ,Guo LJ,Liu DY. Experimental Investigation Of Particle Velocity Distributions In Windblown Sand Movement[J]. Science In China Series G-Physics Mechanics & Astronomy,2008:986-1000. |
| APA | Kang LQ,Guo LJ,&刘大有.(2008).Experimental Investigation Of Particle Velocity Distributions In Windblown Sand Movement.Science In China Series G-Physics Mechanics & Astronomy,986-1000. |
| MLA | Kang LQ,et al."Experimental Investigation Of Particle Velocity Distributions In Windblown Sand Movement".Science In China Series G-Physics Mechanics & Astronomy (2008):986-1000. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。