摘要
化工生产过程普遍涉及两相流动.两相流的数值模拟研究发展迅猛,对深入理解动量、热量和质量传递现象具有重要的指导意义.建立两相流和传递过程的数学模型并进行数值求解,特别是准确描述相界面的变形和运动,是当今两相流数值模拟研究的重点和难点.本文围绕含有可变形界面的两相流的数值模拟研究,主要介绍了两种典型的模拟可变形界面的水平集(Level Set,LS)方法和边界元法(Boundary Element Method,BEM).本文综述了近年来界面处理算法在含有可变形界面的两相流领域中的微流体、液滴撞击和溅落、气泡聚并破碎等数值模拟研究的现状和发展趋势.最后简要描述了两相流界面间质量传递的数值模拟方法.
Two-phase flow and interphase mass transfer are very popular in chemical processes. Rapid development of numerical simulation plays a crucial role in deep understanding of the mechanism of momentum, mass and heat transfer in two-phase systems, However, establishing and solving the mathematical models of two-phase flow and transport processes, especially the accurate description of deformable moving interface, are critical and difficult. This review addresses the level set method and the boundary element method, which are involved with the numerical simulation of two-phase flow of deformable surfaces, and presents a detailed discussion of the limits and advantages of these typical methods. We show the research status and prospect of the mathematical methods of deformation interface of fluid particle coalescence and breakage, micro-fluidics and droplets in two-phase flow field. In the end, we briefly introduce the numerical simulation methods of interphase mass transfer across deformable interface.
出处
《中国科学：物理学、力学、天文学》
CSCD
北大核心
2017年第7期95-110,共16页
Scientia Sinica Physica,Mechanica & Astronomica
基金
国家自然科学基金(编号:21606234,21490584)
国家重点基础研究发展计划(编号:2016YFB0301701)
恩泽生物质精细化工北京市重点实验室开放课题资助项目
关键词
数值模拟
两相流
界面
传质
边界元
LEVEL
SET
numerical simulation
two-phase flow
interface
interphase mass transfer
boundary element
level set
