High-Order Schemes for Neutron Kinetics Calculations, Based on a Local Polynomial Approximation

摘要: A systematic study of the accuracy and efficiency a class asymmetric weighted residual methods, as applied to neutron diffusion equations, is presented. Polynomials up sixth order are considered, with without mixed spatial derivative terms. It turns out that sixth-order polynomial terms most efficient; yet, for normal reactor conditions, sufficiently accurate results can already be obtained third-order mixed-derivative