摘要
研究自然对流换热问题,通过对于空间变量采用有限元离散而对于时间变量用差分离散,导出一种基于混合有限元法的最低阶的差分格式,这种格式可以同时求出流体的速度、温度和压力的数值解。
The non stationary natural convection problem is studied.A lowest order finite difference scheme based on mixed finite element method for non stationary natural convection problem,by the spatial variations discreted with finite element method and time with finite difference scheme was derived,where the numerical solution of velocity,pressure,and temperature can be found together,and a numerical example to simulate the close square cavity is given,which is of practical importance.
出处
《应用数学和力学》
EI
CSCD
北大核心
2003年第9期973-983,共11页
Applied Mathematics and Mechanics
基金
国家自然科学基金资助项目(10071052
49776283)
北京市教委资助项目
中国科学院"百人计划"
北京市优秀人才专项经费
中国科学院九五重点项目资助项目(K2952_51_434)
关键词
自然对流换热问题
混合元法
差分格式
nutural convection equation
mixed element method
finite difference scheme
