A hybrid FD-DEM solver for rigid particles in viscous fluid

doi:10.1016/j.compfluid.2015.05.028

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	A hybrid FD-DEM solver for rigid particles in viscous fluid
	Wu, Shifeng 1,2,3; Yuan, Li 2,3
	2015-09-02
发表期刊	COMPUTERS & FLUIDS
ISSN	0045-7930
卷号	118 页码:159-166
摘要	In this article, the dynamics of colliding particles immersed in a viscous fluid is numerically investigated. An improved fictitious domain (FD) method for a solid-fluid system is developed and a collision strategy for multiple particles is presented. In earlier methods, a repulsive force is applied to the particles when their separation distance is less than a critical value and depending on the magnitude of this artificial repulsive force, collision of two or more particles may bounce unrealistically. In the present method, when the collision of two or more particles happens, the collision force acting on each colliding particle is determined by using the Discrete Element Method (DEM). Furthermore, the improved FD method employs a discrete delta-function in the form of bi-function to transfer quantities between the Eulerian and Lagrangian nodes similar to the immersed boundary method. This feature avoids the need to use Lagrange multipliers for imposition of the rigid body motion. Numerical results for motions of one or several particles in a viscous fluid are presented. (C) 2015 Elsevier Ltd. All rights reserved.
关键词	Collision Particulate flow Repulsive force Fictitious domain method Discrete element method Discrete delta-function
DOI	10.1016/j.compfluid.2015.05.028
语种	英语
资助项目	Natural Science Foundation of China[10972230] ; Natural Science Foundation of China[11021101] ; Natural Science Foundation of China[11261160486] ; state key program for developing basic sciences[2010CB731505] ; Department of Education of Guangdong Province[2014KQNCX175]
WOS研究方向	Computer Science ; Mechanics
WOS类目	Computer Science, Interdisciplinary Applications ; Mechanics
WOS记录号	WOS:000359964100012
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/20621
专题	中国科学院数学与系统科学研究院
通讯作者	Wu, Shifeng
作者单位	1.Guangdong Polytech Normal Univ, Dept Comp Sci, Guangzhou 510665, Guangdong, Peoples R China 2.Chinese Acad Sci, LSEC, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Inst Computat Math, Acad Math & Syst Sci, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Wu, Shifeng,Yuan, Li. A hybrid FD-DEM solver for rigid particles in viscous fluid[J]. COMPUTERS & FLUIDS,2015,118:159-166.
APA	Wu, Shifeng,&Yuan, Li.(2015).A hybrid FD-DEM solver for rigid particles in viscous fluid.COMPUTERS & FLUIDS,118,159-166.
MLA	Wu, Shifeng,et al."A hybrid FD-DEM solver for rigid particles in viscous fluid".COMPUTERS & FLUIDS 118(2015):159-166.