Knowledge Management System of Institue of Mechanics, CAS
| CFD-DEM simulation of three-dimensional aeolian sand movement | |
Yang JC(杨杰程) ; Zhang Y(张宇); Liu DY(刘大有); Wei XL(魏小林); Zhang Y
| |
| Source Publication | Science China-Physics Mechanics & Astronomy
 |
| 2010 | |
| Volume | 53Issue:7Pages:1306-1318 |
| ISSN | 1674-7348 |
| Abstract | 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. |
| DOI | 10.1007/s11433-010-4038-6 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000280210700026 |
| WOS Keyword | WIND-TUNNEL ; SALTATION ; TRANSPORT ; VELOCITY |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| Funding Organization | National Natural Science Foundation of China [10972223] ; CAS Innovation Program |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/43325 |
| Collection | 等离子体与燃烧中心(2009-2011) |
| Corresponding Author | Zhang Y |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 059.pdf（684KB） | 开放获取 | -- | View Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment