Parallel Solution of Radiative Transport Problems in Astrophysics

Monday, June 9, 1997 - 2:20pm - 2:40pm
Keller 3-180
Guido Kanschat (Ruprecht-Karls-Universität Heidelberg)
Simulation of multidimensional radiative transfer problems is of high complexity. The domain of computation is 5-dimensional, making a combination of adaptive algorithms and parallel computation necessary for the solution. A method of distributing the ordinate space is presented. Linear systems are solved by Krylov-space methods combined with multi-level techniques. We avoid typical problems of parallel preconditioning of transport problems by a purely local preconditioner. A time complexity analysis will be presented, as well as two- and three-dimensional results.