权重积分方法计算界面张力消除表面“寄生”流

CIESC Journal

• TRANSPORT PHENOMENA & FLUID MECHANICS • 上一篇下一篇

权重积分方法计算界面张力消除表面“寄生”流

王剑峰^a,b; 杨超^a; 毛在砂^a

^a Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China
^b Chemical Engineering Department, Zhengzhou University, Zhengzhou 450052, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-12-28 发布日期:2006-12-28
通讯作者: 王剑峰

A simple weighted integration method for calculating surface tension force to suppress parasitic flow in the level set approach

WANG Jianfeng^a,b; YANG Chao^a; MAO Zaisha^a

^a Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China
^b Chemical Engineering Department, Zhengzhou University, Zhengzhou 450052, China

Received:1900-01-01 Revised:1900-01-01 Online:2006-12-28 Published:2006-12-28
Contact: WANG Jianfeng

摘要/Abstract

摘要： Parasitic flows may occur in the numerical simulation of incompressible multiphase flow due to errors in the calculation of surface tension terms, specifically for the curvature and unit normal vector. An improved method for calculating the surface tension based on the level set approach is proposed, in which the contribution of not only the center node but also the rest area of a control volume to the calculation of surface tension is considered in a balanced manner. The weighted integration method (WIM) is more consistent with the concept of a banded in-terface in the level set method. It is applied to the temporal evolution of a two-dimensional neutrally buoyant liquid drop and a buoyancy driven deformable bubble in an immiscible fluid for the validation of WIM. The results show that the parasitic flows are evidently suppressed by the weighted integration method. The weight factors for WIM in 3-D cases are also suggested.

关键词: parasitic flow;weighted integration method;surface tension;level set approach;numerical simulation

Abstract: Parasitic flows may occur in the numerical simulation of incompressible multiphase flow due to errors in the calculation of surface tension terms, specifically for the curvature and unit normal vector. An improved method for calculating the surface tension based on the level set approach is proposed, in which the contribution of not only the center node but also the rest area of a control volume to the calculation of surface tension is considered in a balanced manner. The weighted integration method (WIM) is more consistent with the concept of a banded in-terface in the level set method. It is applied to the temporal evolution of a two-dimensional neutrally buoyant liquid drop and a buoyancy driven deformable bubble in an immiscible fluid for the validation of WIM. The results show that the parasitic flows are evidently suppressed by the weighted integration method. The weight factors for WIM in 3-D cases are also suggested.

Key words: parasitic flow, weighted integration method, surface tension, level set approach, numerical simulation

王剑峰,杨超, 毛在砂. 权重积分方法计算界面张力消除表面“寄生”流[J]. CIESC Journal.

WANGJianfeng,YANGChao, MAOZaisha. A simple weighted integration method for calculating surface tension force to suppress parasitic flow in the level set approach[J]. .

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权重积分方法计算界面张力消除表面“寄生”流

A simple weighted integration method for calculating surface tension force to suppress parasitic flow in the level set approach

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