Analysis of a multistep Jacobi multigrid method for solving the Euler equations

摘要: We study the convergence of Jacobi multistep multigrid meth-ods for solving the steady Euler equations with a MUSCL approximation; these methods involve some advantages of local and characteristic time step-ping. The main tool is two-grid analysis; an analytic study is done for 1D case. Experiments are produced in 2D for proposing a heuristic rule. A low complexity W-cycle is compared to the 2-Grid iteration.