Lattice Boltzmann Simulation of Multiphase Flows in a Square Cavity

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2013, Vol. 30 ›› Issue (4): 520-526.

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Lattice Boltzmann Simulation of Multiphase Flows in a Square Cavity

HONG Ning¹, LI Tiyun², LI Qiuxiang³, SHI Baochang²

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

Abstract

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

CLC Number:

O359.1

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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Lattice Boltzmann Simulation of Multiphase Flows in a Square Cavity

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