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 A lattice Boltzmann model for multiphase flows with moving contact line and variable density Huang, Jizu1,2; Wang, Xiao-Ping3 2018-01-15 Source Publication JOURNAL OF COMPUTATIONAL PHYSICS ISSN 0021-9991 Volume 353Pages:26-45 Abstract In this paper, we develop an efficient lattice Boltzmann model for the two-phase moving contact line problem with variable density. The Navier-Stokes and Cahn-Hilliard equations are recovered from the lattice Boltzmann model proposed by Fakhari and Rahimian [5]. To improve numerical stability, we present a semi-implicit lattice Boltzmann method together with a mixed finite difference scheme. In order to describe the behavior of the contact line motion on the boundary, we incorporate the generalized Navier boundary condition [25] by the nonequilibrium extrapolation method [8]. The proposed method is easy to implement and retains the advantage of the standard lattice Boltzmann method. Numerical tests are carried out to verify the proposed method. Our numerical results show that the present approach is able to model two-phase flows with variable density and moving contact line. (C) 2017 Elsevier Inc. All rights reserved. Keyword Lattice Boltzmann model Variable density Moving contact line Slip boundary condition DOI 10.1016/j.jcp.2017.10.002 Language 英语 Funding Project Hong Kong RGC-GRF[16302715] ; Hong Kong RGC-GRF[16324416] ; Hong Kong RGC-CRF[C6004-14G] ; NSFC[11501554] WOS Research Area Computer Science ; Physics WOS Subject Computer Science, Interdisciplinary Applications ; Physics, Mathematical WOS ID WOS:000418229800002 Publisher ACADEMIC PRESS INC ELSEVIER SCIENCE Citation statistics Document Type 期刊论文 Identifier http://ir.amss.ac.cn/handle/2S8OKBNM/29223 Collection 计算数学与科学工程计算研究所 Corresponding Author Wang, Xiao-Ping Affiliation 1.Chinese Acad Sci, Acad Math & Syst Sci, LSEC, Inst Computat Math & Sci Engn Comp, Beijing 100190, Peoples R China2.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China3.Hong Kong Univ Sci & Technol, Dept Math, Kowloon, Hong Kong, Peoples R China Recommended CitationGB/T 7714 Huang, Jizu,Wang, Xiao-Ping. A lattice Boltzmann model for multiphase flows with moving contact line and variable density[J]. JOURNAL OF COMPUTATIONAL PHYSICS,2018,353:26-45. APA Huang, Jizu,&Wang, Xiao-Ping.(2018).A lattice Boltzmann model for multiphase flows with moving contact line and variable density.JOURNAL OF COMPUTATIONAL PHYSICS,353,26-45. MLA Huang, Jizu,et al."A lattice Boltzmann model for multiphase flows with moving contact line and variable density".JOURNAL OF COMPUTATIONAL PHYSICS 353(2018):26-45.
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