Simulation of hard-disk flow in microchannels

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	Simulation of hard-disk flow in microchannels
	Shen, Guofei 1,2; Ge, Wei 1
刊名	PHYSICAL REVIEW E
	2010
卷号	81 期号:1 页码:文献号: 011201
关键词	POISEUILLE FLOW PLANE POISEUILLE MOLECULAR-DYNAMICS BURNETT SOLUTIONS GAS HYDRODYNAMICS TRANSITION SYSTEM FLUIDS
ISSN号	1539-3755
通讯作者	Ge, W
英文摘要	The dynamic flow behavior of a hard-disk fluid under external force field in two-dimensional microchannels is investigated using an event-driven molecular dynamics simulation method. Simulations have been carried out under laminar and subsonic conditions in both slip regime and transition regime, and the effects of three main factors, Knudsen number (Kn), force field intensity, and packing fraction, on flow and heat transfer behavior have been studied. It is shown that all the factors play important roles in the velocity distribution of the flow, and the temperature profile of the gas flow may exhibit a bimodal shape with a local minimum instead of a maximum in the center. These findings verify the predictions of nonequilibrium kinetic theories on the so-called "temperature dip." At high Kn, the two maxima of temperature shift to two walls and the temperature profile changes to a "parabola" opening upward with a minimum in the center. A slight setback of the temperature is also found before the fluid flow eventually arrives at a steady state when the shear rate is high enough.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Fluids & Plasmas ; Physics, Mathematical
研究领域[WOS]	Physics
关键词[WOS]	POISEUILLE FLOW ; PLANE POISEUILLE ; MOLECULAR-DYNAMICS ; BURNETT SOLUTIONS ; GAS ; HYDRODYNAMICS ; TRANSITION ; SYSTEM ; FLUIDS
收录类别	SCI
语种	英语
WOS记录号	WOS:000274003300043
公开日期	2013-11-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/6257]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 10049, Peoples R China
推荐引用方式 GB/T 7714	Shen, Guofei,Ge, Wei. Simulation of hard-disk flow in microchannels[J]. PHYSICAL REVIEW E,2010,81(1):文献号: 011201.
APA	Shen, Guofei,&Ge, Wei.(2010).Simulation of hard-disk flow in microchannels.PHYSICAL REVIEW E,81(1),文献号: 011201.
MLA	Shen, Guofei,et al."Simulation of hard-disk flow in microchannels".PHYSICAL REVIEW E 81.1(2010):文献号: 011201.