Multiple-relaxation-time lattice Boltzmann model for double-diffusive convection with Dufour and Soret effects

被引：42

作者：

Liu, Qing ^{[1
]}

Feng, Xiang-Bo ^{[2
]}

Xu, Xiao-Tao ^{[3
]}

He, Ya-Ling ^{[4
]}

机构：

[1] Xian Univ Architecture & Technol, Sch Resource Engn, Xian 710055, Shaanxi, Peoples R China

[2] Xijing Univ, Sch Sci, Shaanxi Engn Res Ctr Controllable Neutron Source, Xian 710123, Shaanxi, Peoples R China

[3] Xian Thermal Power Res Inst Co Ltd, Xian 710054, Shaanxi, Peoples R China

[4] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Minist Educ, Key Lab Thermofluid Sci & Engn, Xian 710049, Shaanxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2019年 / 139卷

基金：

中国国家自然科学基金;

关键词：

Lattice Boltzmann method; Multiple-relaxation-time; Double-diffusive convection; Dufour effect; Soret effect; AXISYMMETRICAL THERMAL-FLOWS; RECTANGULAR ENCLOSURE; CENTRAL MOMENTS; SIMULATION; CAVITY; PHASE;

D O I：

10.1016/j.ijheatmasstransfer.2019.05.026

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper proposes a multiple-relaxation-time (MRT) lattice Boltzmann (LB) model for double-diffusive convection with Dufour and Soret (cross-diffusion) effects. The main strategy is to recover the Dufour and Soret terms by modifying the second-order equilibrium moments of the temperature and concentration distribution functions in the moment space, which is consistent with the philosophy of the LB method. As a result of this strategy, the present model is simpler and easier to implement when compared with the existing LB models. Numerical simulations show that double-diffusive convection with Dufour and Soret effects can be well simulated. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：713 / 719

页数：7

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