Agglomeration multigrid for two-dimensional viscous flows
A Galerkin coarse grid operator and an implicit prolongation operator are proposed. Their suitability is evaluated by examining their effect on the solution of Laplace's equation. The resulting strategy is employed to solve the Reynolds-averaged Navier-Stokes equations for aerodynamic flows. Convergence rates comparable to those obtained by a previously developed non-nested mesh multigrid approach are demonstrated, and suggestions for further improvements are given.
Reynolds-averaged Navier-Stokes equations
scientific article; zbMATH DE number 880537