Natural Convection in a Concentric Annulus:A Lattice Boltzmann Method Study with Boundary Condition-Enforced Immersed Boundary Method  

作　　者：Yang Hu Xiao-Dong Niu Shi Shu Haizhuan Yuan Mingjun Li 

机构地区：[1]School ofMathematics and Computational Science,XiangtanUniversity,Hunan,China [2]Energy Conversion Research Center,Doshisha University,Kyoto,Japan

出　　处：《Advances in Applied Mathematics and Mechanics》2013年第3期321-336,共16页应用数学与力学进展（英文）

基　　金：This work was partially supported by the Key Project of Scientific Research Fund of Hunan Provincial Science and Technology Department(No.2011FJ2011)in China;the Program for Changjiang Scholars and Innovative Research Team in University of China(No.IRT1179);the Scientific Research Fund of Hunan Provincial Education Department(No.12A138);the National Natural Science Fund of China(No.11171281);the Hunan Provincial Innovation For Post Graduate(No.CX2012B264,No.CX2012B239);the One Hundred Person Project of Hunan Province of China under Xiangtan University,and the Academic Frontier Research Project on Next Generation Zero-emission Energy Conversion System of Ministry of Education,Culture,Sports,Science and Technology of Japan.

摘　　要：In this paper,a boundary condition-enforced IBM is introduced into the LBMin order to satisfy the non-slip and temperature boundary conditions,and natural convections in a concentric isothermal annulus between a square outer cylinder and a circular inner cylinder are simulated.The obtained results show that the boundary condition-enforced method gives a better solution for the flow field and the complicated physics of the natural convections in the selected case is correctly captured.The calculated average Nusselt numbers agree well with the previous studies.

关 键 词：Lattice Boltzmann method boundary condition-enforced immersed boundary method natural convection 

分 类 号：O35[理学—流体力学]