计算物理 ›› 2013, Vol. 30 ›› Issue (4): 520-526.

• 论文 • 上一篇    下一篇

两相方腔流的格子Boltzmann模拟

洪宁1, 李体云2, 李秋香3, 施保昌2   

  1. 1. 中国地质大学江城学院基础课部, 湖北 武汉 430200;
    2. 华中科技大学数学与统计学院, 湖北 武汉 430074;
    3. 华中科技大学煤燃烧国家重点实验室, 湖北 武汉 430074
  • 收稿日期:2012-10-31 修回日期:2013-01-28 出版日期:2013-07-25 发布日期:2013-07-25
  • 通讯作者: 李体云,E-mail:ywdl_11@163.com
  • 作者简介:洪宁(1982-),女,讲师,硕士,主要从事格子Bohzmann方法的建模与模拟,E-mail:llqqxxx@126.com
  • 基金资助:
    国家自然科学基金(11272132,51006040)资助项目

Lattice Boltzmann Simulation of Multiphase Flows in a Square Cavity

HONG Ning1, LI Tiyun2, LI Qiuxiang3, SHI Baochang2   

  1. 1. Department of Basic Courses, Jiangcheng College, China University of Geosciences, Wuhan 430200, China;
    2. School of Mathematics and Statistics, Huazhong University of Science and Technology, Wuhan 430074, China;
    3. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2012-10-31 Revised:2013-01-28 Online:2013-07-25 Published:2013-07-25

摘要: 利用基于Shan-Chen多相模型的格子Boltzmann方法对方腔内上板拖动的两相流动问题开展较为系统的数值模拟,详细研究雷诺数(Re),毛细数(Ca)和壁面润湿性对流动以及混合特性的影响.结果表明:Re数、Ca数越大,方腔内两相流体的混合界面长度越大,混合效果越好.另外,壁面憎水程度越高,混合界面长度增加越快,然而对于强亲水壁面,混合界面长度最终趋于一常数.

关键词: 格子Boltzmann方法, Shan-Chen模型, 多相流, 方腔流

Abstract: Lattice Boltzmann multiphase method based on Shan-Chen model is used to a systematic study on dynamics of two-phase fluid flows in a lid-driven square cavity.Effects of Reynolds (Re),Capillary number (Ca) and surface wettability on flowing and mixing are investigated in details.It shows that the greater the Re and Ca,the longer pength of two phase fluid mixing interface in the cavity.In addition,the length of mixing interface increases with surface hydrophobicity.However,for a highly hydrophilic surface,the length of mixing interface tends to a constant finally.

Key words: lattice Boltzmann method, Shan-Chen model, multiphase flow, flow in a square cavity

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