Open AccessAn Innovative Reactor Analysis Methodology Based on a Quasidiffusion Nodal Core Model. Nuclear Energy Research Initiative (NERI) Program. Quarterly Technical Progress Report
Author(s) -
Dmitriy Y. Anistratov,
Marvin L. Adams,
Todd S. Palmer,
Kord Smith
Publication year - 2000
Language(s) - English
Resource type - Reports
DOI - 10.2172/761607
Subject(s) - discretization , eigenvalues and eigenvectors , parameterized complexity , moment (physics) , mathematics , boundary value problem , geometry , mathematical analysis , algorithm , physics , quantum mechanics , classical mechanics
Status Summary of NERI Tasks - Phase 1 - Task 1. The development of the following methods in ID slab geometry: (1) Homogenization and definition of discontinuity factors, (2) Group constants functionalization using assembly transport solution of multigroup eigenvalue problem with albedo boundary conditions, and (3) Solving coarse-mesh effective few-group 1D QD moment equations using tables of data parameterized with respect to the ratio {rvec n} {center_dot} {bar J}{sup G}/{bar {phi}}{sup G} on boundaries. Status Summary of NERI Tasks - Phase 1 - Task 2. Development of a numerical method for solving the 2D few-group moment QD equations: (1) Development of a nodal discretization method for 2D moment QD equations, and (2) Development of an efficient iteration method for solving the system of equations of the nodal discretization method for 2D moment QD equations