西安理工大学学报2016，Vol.32Issue(1)：52-57,62,7.DOI:10.19322/j.cnki.issn.1006-4710.2016.01.010
侧加热腔体内对流特性的研究
Study of the convection in a differentially heated cavity
摘要
Abstract
Natural convection of heating from side wall is investigated by means of numerical sim-ulation of 2-D equations of hydrodynamics.The paper studies the influence of Grashof number on flow field,temperature field and the thickness of thermal boundary layer and the influence of Prandtl number on velocity.Results show that the pressure gradient causes the separated intru-sion flow.The thickness of thermal boundary layer changing only with time has nothing to do with Grashof number in the initial phase,but in the stable phase,the thickness of thermal boundary layer decreases obviously with increasing Grashof number,and it increases obviously with cavity height.The vertical-velocity increases with Grashof number when Prandtl number is constant.The vertical-velocity firstly increases and then decreases with time,and finally reaches its stability when Grashof number and Prandtl number are constant.关键词
自然对流/流场/入侵流/热边界层厚度/铅垂流速Key words
natural convection/flow field/intrusion flow/thermal boundary layer thickness/ver-tical velocity分类
数理科学引用本文复制引用
李开继,宁利中,宁碧波,田伟利..侧加热腔体内对流特性的研究[J].西安理工大学学报,2016,32(1):52-57,62,7.基金项目
国家自然科学基金资助项目(10872164) （10872164）
陕西省重点学科建设专项资金资助项目(00X901) （00X901）
