Drop movements and replacement on surface driven by shear force via   hybrid atomistic-continuum simulations

doi:10.1080/08927022.2016.1161191

CORC > 北京大学 > 工学院

	Drop movements and replacement on surface driven by shear force via hybrid atomistic-continuum simulations
	Liu, Guangzhi ; Zhang, Jianying ; Wang, Moran
刊名	MOLECULAR SIMULATION
	2016
关键词	Drop movement hybrid modelling flow resistance multiscale simulation MULTISCALE SIMULATION FLUID-FLOWS DYNAMICS MODEL COMPUTATIONS TENSION SYSTEMS GAS
DOI	10.1080/08927022.2016.1161191
英文摘要	The movements and replacement of a nanoscale drop on a horizontal surface driven by shear force from the other immiscible fluid have been investigated by hybrid atomistic-continuum modelling in this work. The interfacial interaction near the drop, which may not be fully covered by the continuum theories, is modelled by molecular dynamics for accurate capture of transport behaviour, while the bulk flow region is simulated by the lattice Boltzmann method for high efficiency. The momentum exchange between atomistic and continuum regions is realised in a buffer region to couple the multiscale effects, where we propose an artificial solid molecular layer at the outer edge of buffer region to ensure the continuity of shear force between different regions. The influences of moving wall velocity, drop size, surface tension on resistance are examined. Our results show that the resistances increase with the moving wall velocity. A larger drop leads to a larger resistance to drop moving on solid wall, and a larger resistance to bulk flow. A higher surface tension results in a higher resistance to drop movement and bulk flow resistance over the drop because of lower deformation of drop.; Specialized Research Fund for the Doctoral Program of Higher Education of China [20130002110077]; National Science and Technology Major Project on Oil and Gas [2016ZX05013001]; NSF grant of China [U1562217, 51321002]; Tsinghua University Initiative Scientific Research Program [2014z22074]; SCI(E); EI; ARTICLE; mrwang@tsinghua.edu.cn; 10,SI; 855-862; 42
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437094]
专题	工学院
推荐引用方式 GB/T 7714	Liu, Guangzhi,Zhang, Jianying,Wang, Moran. Drop movements and replacement on surface driven by shear force via hybrid atomistic-continuum simulations[J]. MOLECULAR SIMULATION,2016.
APA	Liu, Guangzhi,Zhang, Jianying,&Wang, Moran.(2016).Drop movements and replacement on surface driven by shear force via hybrid atomistic-continuum simulations.MOLECULAR SIMULATION.
MLA	Liu, Guangzhi,et al."Drop movements and replacement on surface driven by shear force via hybrid atomistic-continuum simulations".MOLECULAR SIMULATION (2016).