Movement and evolution of macromolecules in a grooved micro-channel

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	Movement and evolution of macromolecules in a grooved micro-channel
	Zhou LW(周吕文); Liu MB(刘谋斌); Chang JZ; Liu MB(刘谋斌)
发表期刊	INTERACTION AND MULTISCALE MECHANICS
	2013-06
卷号	6 期号:2 页码:157-172
ISSN	1976-0426
摘要	This paper presented an investigation of macromolecular suspension in a grooved channel by using the dissipative particle dynamics (DPD) with finitely extensible non-linear elastic (FENE) bead spring chains model. Before studying the movement and evolution of macromolecules, the DPD method was first validated by modeling the simple fluid flow in the grooved channel. For both simple fluid flow and macromolecular suspension, the flow fields were analyzed in detail. It is found that the structure of the grooved channel with sudden contraction and expansion strongly affects the velocity distribution. As the width of the channel reduces, the horizontal velocity increases simultaneously. Vortices can also be found at the top and bottom corners behind the contraction section. For macromolecular suspension, the macromolecular chains influence velocity and density distribution rather than the temperature and pressure. Macromolecules tend to drag simple fluid particles, reducing the velocity with density and velocity fluctuations. Particle trajectories and evolution of macromolecular conformation were investigated. The structure of the grooved channel with sudden contraction and expansion significantly influence the evolution of macromolecular conformation, while macromolecules display adaptivity to adjust their own conformation and angle to suit the structure so as to pass the channel smoothly.
关键词	Dissipative Particle Dynamics Macromolecular Suspension Grooved Micro-channel
学科领域	交叉与边缘领域的力学
URL	查看原文
语种	英语
课题组名称	LMFS冲击与耦合效应(LHO)
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/48302
专题	流固耦合系统力学重点实验室
通讯作者	Liu MB(刘谋斌)
推荐引用方式 GB/T 7714	Zhou LW,Liu MB,Chang JZ,et al. Movement and evolution of macromolecules in a grooved micro-channel[J]. INTERACTION AND MULTISCALE MECHANICS,2013,6,2,:157-172.
APA	Zhou LW,Liu MB,Chang JZ,&刘谋斌.(2013).Movement and evolution of macromolecules in a grooved micro-channel.INTERACTION AND MULTISCALE MECHANICS,6(2),157-172.
MLA	Zhou LW,et al."Movement and evolution of macromolecules in a grooved micro-channel".INTERACTION AND MULTISCALE MECHANICS 6.2(2013):157-172.

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