Nieliniowe warunki brzegowe w problemach filtracji ustalonej

It is shown in the paper that nonlinear boundary conditions can appear for steady seepage problems. Characteristic examples of the problems are discussed. Known methods (finite difference method, finite element method and boundary element method) are proposed for solving steady seepage problems with nonlinear boundary conditions. The discretized
system can be written as a set of nonlinear algebraic equations, which is solved by direct iteration technique. Results for two typical problems are included.