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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 PublicationScience China-Physics Mechanics & Astronomy
2010
Volume53Issue:7Pages:1306-1318
ISSN1674-7348
AbstractA 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.
DOI10.1007/s11433-010-4038-6
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000280210700026
WOS KeywordWIND-TUNNEL ; SALTATION ; TRANSPORT ; VELOCITY
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [10972223] ; CAS Innovation Program
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43325
Collection等离子体与燃烧中心(2009-2011)
Corresponding AuthorZhang 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.
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