THE VARIATIONAL PRINCIPLE FOR PROBLEMS OF FLUID FLOW THROUGH POROUS MEDIA WITH FIXED BOUNDARY AND INITIAL CONDITIONS
应力场、 渗流场和流场耦合系统定边值定初值问题的变分原理

A generalized variational principle for the problem of fluid flow through porous media with fixed boundary and initial conditions is presented, and the correspouding FEM formulae are made.