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.