標題: A level-set method for two-phase flows with soluble surfactant
作者: Xu, Jian-Jun
Shi, Weidong
Lai, Ming-Chih
應用數學系
Department of Applied Mathematics
關鍵字: Soluble surfactant;Multi-phase flow;Level-set method;Diffusive domain method;Surfactant mass conservation;Topological change
公開日期: 15-Jan-2018
摘要: A level-set method is presented for solving two-phase flows with soluble surfactant. The Navier-Stokes equations are solved along with the bulk surfactant and the interfacial surfactant equations. In particular, the convection-diffusion equation for the bulk surfactant on the irregular moving domain is solved by using a level-set based diffusive-domain method. A conservation law for the total surfactant mass is derived, and a re-scaling procedure for the surfactant concentrations is proposed to compensate for the surfactant mass loss due to numerical diffusion. The whole numerical algorithm is easy for implementation. Several numerical simulations in 2D and 3D show the effects of surfactant solubility on drop dynamics under shear flow. (C) 2017 Elsevier Inc. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jcp.2017.10.019
http://hdl.handle.net/11536/144247
ISSN: 0021-9991
DOI: 10.1016/j.jcp.2017.10.019
期刊: JOURNAL OF COMPUTATIONAL PHYSICS
Volume: 353
起始頁: 336
結束頁: 355
Appears in Collections:Articles