三维可压两相流扩散界面模型的界面极限分析  

Sharp interface limit for the diffuse interface model of three-dimensional compressible two-phase flow

作　　者：童天娇 陈亚洲[1] TONG TianJiao;CHEN YaZhou(College of Mathematics and Physics,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学数理学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2020年第6期121-126,共6页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家自然科学基金(11671027/11901025)。

摘　　要：主要讨论了三维可压两相流扩散界面模型—Navie r-Stoke s-Cah n-Hilliard(NSCH)方程组中接触界面厚度趋于零时的极限问题,通过渐近匹配展开的方法,从方程组解的渐近极限中推导出相应两相流的自由界面模型及界面条件。In this paper,we consider the sharp interface limit for the diffusive interface model of two-phase flow which can be described by the compressible Navie r-Stoke s-Cah n-Hilliard system in three-dimensional space.The sharp interface model of the two-phase fluid,with the interface being a free boundary,is derived from this diffusive interface model by means of a matched asymptotic expansion.

关 键 词：Navie r-Stoke s-Cah n-Hilliard(NSCH)方程组 扩散界面 渐近匹配展开 

分 类 号：O359[理学—流体力学]