PDEase2D solves a very wide range of nonlinear problems. It simplifies finite element analysis with automatics gridding, automated error analysis, flexible solution methods, and a simple input language. PDEase2D solves static, dynamic, and eigenvalue problems in two space dimensions, including PDEs of mixed elliptic, parabolic and hyperbolic type. The program defines its own element grid, performs error analysis, and refines the grid as needed until error criteria are met. It solves nonlinear equations by iterative methods, adaptively selects time step size in dynamic methods, and draws plots using the Macsyma front end. While users can intervene in these decisions, the software takes great care to usally make good decisions without user guidance. PDEase2D Lite offers all the mathematical capabilities of PDEase 2D, but is designed for users with small finite element problems.
