A Multigrid Framework for $S_n$ Discretizations of the Boltzmann Transport Equation

摘要: The space-angle multiple/semicoarsening multigrid methods of [B. Lee, SIAM J. Sci. Comput., 31 (2010), pp. 4744--4773] for $S_n$ discretizations the Boltzmann transport equation were developed assuming rediscretizations streaming-collision operators on coarser spatial grids. These rediscretized are directly used in kernels coarse-level scalar flux integral equations. Since computational procedure these is essentially performed equations, it appears that applied to finest level rather than system. However, this actually implicitly It would be beneficial relate full system or, better yet, develop a general framework system, which particular cases. Thi...