3D radiation transport benchmark problems and results for simple geometries with void region

Three-dimensional (3D) transport benchmark problems for simple geometries with void region were proposed at the OECD/NEA in order to check the accuracy of deterministic 3D transport programs. The exact total fluxes by the analytical method are given for the pure absorber cases, and Monte Carlo values are given for the 50% scattering cases as the reference values. The total fluxes of all contributions to the present benchmark problems calculated by the 3D transport programs, TORT, TORT with FNSUNCL3, PARTISN, PENTRAN, IDT, MCCG3D, EVENT and ARDRA are compared in figures.