Neumann–Dirichlet method

The Neumann–Dirichlet method refers to a numerical technique used to solve partial differential equations (PDEs), particularly in the context of fluid dynamics, electrostatics, and other fields where boundary value problems arise. The method involves a combination of the Dirichlet boundary condition, where the solution is specified on a boundary, and the Neumann boundary condition, where the derivative (often representing a flux or gradient) of the solution is specified on a boundary.