分子传质问题的变分原理与广义变分原理  

Variational Principle and Generalized Variational Principle for Molecular Diffusion

作　　者：王国栋[1] 

机构地区：[1]吉林工学院化学工程系

出　　处：《吉林工学院学报（自然科学版）》1992年第3期157-161,共5页Journal of Jilin Institute of Technology

摘　　要：本文利用加权余值法从微分方程及其定解条件出发,导出了分子传质问题的变分原理,利用拉格朗日乘子法吸收第一类边界条件给出其广义变分原理。The variational principle of the molecular diffusion in mass transfer is established by means of the weighted residual method from the differential equation with its initial and boundary conditions . Then its generalized variational principle is established on the basis of Lagrange multiplier method by absorbing the first kind of boundarg conditions .

关 键 词：分子扩散 广义变分原理 加权余值法 分子传质 变分原理 拉格朗日乘子法 

分 类 号：O552.32[理学—热学与物质分子运动论]