CFD-DEM simulation of three-dimensional aeolian sand movement
文献类型：期刊论文
| 作者 | Yang JC(杨杰程) ; Zhang Y(张宇); Liu DY(刘大有); Wei XL(魏小林); Zhang Y
|
| 刊名 | Science China-Physics Mechanics & Astronomy
 |
| 出版日期 | 2010 |
| 卷号 | 53期号:7页码:1306-1318 |
| 通讯作者邮箱 | zhangyu@imech.ac.cn |
| ISSN号 | 1674-7348 |
| 通讯作者 | Zhang Y |
| 合作状况 | 国内 |
| 中文摘要 | A three-dimensional CFD-DEM model is proposed to investigate the aeolian sand movement. The results show that the mean particle horizontal velocity can be expressed by a power function of heights. The probability distribution of the impact and lift-off velocities of particles can be described by a log-normal function, and that of the impact and lift-off angles can be expressed by an exponential function. The probability distribution of particle horizontal velocity at different heights can be described as a lognormal function, while the probability distribution of longitudinal and vertical velocity can be described as a normal function. The comparison with previous two-dimensional calculations shows that the variations of mean particle horizontal velocity along the heights in two-dimensional and three-dimensional models are similar. However, the mean particle density of the two-dimensional model is larger than that in reality, which will result in the overestimation of sand transportation rate in the two-dimensional calculation. The study also shows that the predicted probability distributions of particle velocities are in good agreement with the experimental results. |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | WIND-TUNNEL ; SALTATION ; TRANSPORT ; VELOCITY |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [10972223]; CAS Innovation Program |
| 原文出处 | http://www.springerlink.com/content/63v836u871500885/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000280210700026 |
| 公开日期 | 2011-03-01 ; 2011-03-30 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/43325]  |
| 专题 | 力学研究所_等离子体与燃烧中心(2009-2011) |
| 通讯作者 | Zhang Y |
| 推荐引用方式 GB/T 7714 | Yang JC,Zhang Y,Liu DY,et al. CFD-DEM simulation of three-dimensional aeolian sand movement[J]. Science China-Physics Mechanics & Astronomy,2010,53(7):1306-1318. |
| APA | 杨杰程,张宇,刘大有,魏小林,&Zhang Y.(2010).CFD-DEM simulation of three-dimensional aeolian sand movement.Science China-Physics Mechanics & Astronomy,53(7),1306-1318. |
| MLA | 杨杰程,et al."CFD-DEM simulation of three-dimensional aeolian sand movement".Science China-Physics Mechanics & Astronomy 53.7(2010):1306-1318. |
入库方式： OAI收割
来源：力学研究所
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