Linear-Discontinuous Galerkin Approximation for the Continuous-Slowing-Down Operator

摘要

A linear-discontinuous Galerkin treatment is developed for the continuous-slowing-down operator. Multigroup Legendre coefficients are derived which allow this treatment to be implemented in standard S/sub n/ codes. A synthetic acceleration scheme is developed to accelerate the outer iterations required by this treatment. A computational comparison between a first-order multigroup treatment, the diamond-difference treatment, and the linear-discontinuous treatment is given. 13 references, 6 figures. (ERA citation 10:019504)