THE DYN3D TRIGONAL-GEOMETRY DIFFUSION MODEL – VERIFICATION USING THE AER-FCM-101 BENCHMARK

S. Duerigen, S. Kliem, Institute of Resource Ecology, Rossendorf, Germany

23rd Symposium of AER on VVER Reactor Physics and Reactor Safety (2013, Štrbské Pleso, Slovakia)
Reactor physics experiments and code validation (benchmarks)

Abstract

DYN3D is a three-dimensional nodal diffusion code for steady-state and
transient analyses of light-water reactors with square and hexagonal fuel
assembly geometries as well as of innovative reactor concepts, which is
undergoing continuous development.
In this work, the trigonal-geometry DYN3D diffusion model is verified by
means of the AER-FCM-101 benchmark. With increasing trigonal mesh
refinement, both effective multiplication factor and power distribution
converge well to the extrapolated finite-element reference solution. In
addition, a comparison to the hexagonal DYN3D diffusion models HEXNEM1
and HEXNEM2 is given.

Presentation / full paper