A Preliminary Study of the OECD/NEA 3D Transport Problem Using the Lattice Code Dragon

Abstract

In this paper we present a premilinary analysis of the NEA3D-TAB-2007 transport problem proposed by the OECD/NEA expert group on radiative transfer. This computational benchmark was originally proposed by Y. Azmy in 2007 to test the performance of 3D transport methods and codes over a suite of problems defined by large variations in space parameters. Two deterministic methods were applied to generate the numerical solutions: the discrete ordinates method (SN), and the method of open characteristics of I.R. Suslov (MCCG). We provide comparisons between MCNP reference solutions and MCCG and DRAGON-SN results in order to reveal the advantages and limitations of both methods.