| 两相方腔流的格子Boltzmann模拟 |
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| 引用本文： | 洪宁,李体云,李秋香,施保昌. 两相方腔流的格子Boltzmann模拟[J]. 计算物理, 2013, 30(4): 520-526 |
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| 作者姓名： | 洪宁 李体云 李秋香 施保昌 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金(11272132,51006040)资助项目 |
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| 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.
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| 关 键 词： | 格子Boltzmann方法 Shan-Chen模型 多相流 方腔流 |
| 收稿时间： | 2012-10-31 |
| 修稿时间： | 2013-01-28 |
Lattice Boltzmann Simulation of Multiphase Flows in a Square Cavity |
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| HONG Ning,LI Tiyun,LI Qiuxiang,SHI Baochang. Lattice Boltzmann Simulation of Multiphase Flows in a Square Cavity[J]. Chinese Journal of Computational Physics, 2013, 30(4): 520-526 |
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| Authors: | HONG Ning LI Tiyun LI Qiuxiang SHI Baochang |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | lattice Boltzmann method Shan-Chen model multiphase flow flow in a square cavity |
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