IMECH-IR  > 水动力学与海洋工程重点实验室(2009-2011)
Alternative TitleA new boundary treatment algorithm for dissipative particle dynamics
刘谋斌; 常建忠
Source Publication物理学报
Abstract耗散粒子动力学(dissipative particle dynamics,DPD)作为一种介观尺度拉格朗日型粒子方法,已经成功地应用于微纳米流动和生化科技的研究中. 复杂固体壁面的处理和壁面边界条件的实施一直是DPD方法发展及应用的一个障碍. 提出了处理复杂固体壁面的一种新的方法. 复杂固体区域通过冻结随机分布并且达到平衡状态的DPD粒子代表;所冻结的DPD粒子位于临近流动区域的一个截距内;在靠近固体壁面的流动区域中设置流动反弹层,当流动DPD粒子进入此流动层后反弹回流动区域. 应用这种固体壁面处理方法.
Other Abstract Dissipative particle dynamics (DPD) is a meso-scale, Lagrangian particle method, and has been successfully applied to different areas including micro- and nano-fluidics, bio- and chemical technologies. The treatment of solid matrix and the implementation of solid boundary conditions have been an important task for the development and application of the DPD method. This paper presents a new method of treating complex solid boundary. Solid grains in complex flow geometry can be represented by freezing randomly distributed DPD particles which have reached an equilibrium state. To increase computational efficiency, only the boundary DPD particles within one cut-off distance from the flow region are frozen. A thin layer in the flow region next to the solid boundary is used to bounce mobile DPD particles in this layer back to the flow region. The DPD method and this new boundary treatment algorithm are used to model the Poiseuille flow and a flow problem in a complex porous media. It is demonstrated that this new boundary treatment algorithm can effectively model complex solid matrix and correctly implement non-slip boundary condition. 
Keyword耗散粒子动力学 无滑移边界条件 固体边界处理 Dissipative Particle Dynamics 介观尺度 Solid Boundary Treatment Meso-scale Non-slip Boundary Condition
Subject Area流体力学 ; 计算流体力学
Indexed BySCI ; EI ; CSCD
WOS IDWOS:000284659900006
Funding Organization国家自然科学基金(批准号:10942004,50976108)
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Cited Times:9[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author刘谋斌
Recommended Citation
GB/T 7714
刘谋斌,常建忠. 耗散粒子动力学处理复杂固体壁面的一种有效方法[J]. 物理学报,2010,59(11):7556-7563.
APA 刘谋斌,&常建忠.(2010).耗散粒子动力学处理复杂固体壁面的一种有效方法.物理学报,59(11),7556-7563.
MLA 刘谋斌,et al."耗散粒子动力学处理复杂固体壁面的一种有效方法".物理学报 59.11(2010):7556-7563.
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