高校化学工程学报Issue(4)：712-718,7.DOI:10.3969/j.issn.1003-9015.2014.04.004
间断等温边界下多孔介质方腔内非热平衡自然对流传热数值模拟
Numerical Simulation of Natural Convection in a Square Cavity of Porous Media with Partially Thermal Active Sidewalls
摘要
Abstract
This study reports a numerical investigation of steady non-Darcian natural convection in a square cavity of a heat-generating porous medium via adopting a local thermal non-equilibrium model with SIMPLER algorithm. Six different discontinuous isothermal boundary conditions were considered along vertical walls while the remaining portions of the side walls as well as the top and bottom of the cavity were adiabatic. The simulation results show that the streamline and the temperature field in the cavity are symmetrical because of the symmetricity of the temperature boundary. The porosity and Darcy numbers have significant effects on heat transfer rate of the square cavity. When the Darcy number is less than 10-5, heat transfer rate has little variation with the change of the Darcy number, but it varies markedly when the Darcy number is greater than 10-5 because of the development of convective heat transfer in the square cavity.关键词
非热平衡模型/间断等温边界/自然对流/数值模拟Key words
local thermal non-equilibrium model/partially isothermal boundary conditions/natural分类
化学化工引用本文复制引用
吴峰,王刚,马晓迅..间断等温边界下多孔介质方腔内非热平衡自然对流传热数值模拟[J].高校化学工程学报,2014,(4):712-718,7.基金项目
国家科技部国际科技合作专项(S2013GR0064)；国家高技术研究发展计划(863计划)(2011AA05A2021)；国家自然科学基金(51174281)；高等学校博士学科点专项基金新教师联合资助(20136101120010)；第54批中国博士后面上一等基金(2013M540768)。 （S2013GR0064）
