An algebraic multigrid method for high order time-discretization of the div-grad and the curl-curl equations KU Leuven
We present an algebraic multigrid algorithm for fully coupled implicit Runge-Kutta and Boundary Value Method time discretizations of the div-grad and curlcurl equations. The algorithm uses a blocksmoother and a multigrid hierarchy derived from the hierarchy built by any algebraic multigrid algorithm for the stationary version of the problem. By a theoretical analysis and numerical experiments, we show that the convergence is similar to or better ...