Angular multigrid acceleration method and Lyusternik-Wagner extrapolation acceleration technique for numerical calculation of neutron transport equation

The angular multigrid (ANMG) acceleration method and the Lyusternik-Wagner extrapolation acceleration technique are applied to accelerate the neutron transport equation solver DNTR, which was developed by using SN nodal method in triangular-z meshes. Some numerical results demonstrate that the ANMG acceleration method applied to DNTR is effective, even in strong anisotropic scattering and high scattering ratio situations, especially combined with the Lyusternik-Wagner extrapolation acceleration technique.