THE DYN3D TRIGONAL-GEOMETRY DIFFUSION MODEL – VERIFICATION USING THE AER-FCM-101 BENCHMARK
23rd Symposium of AER on VVER Reactor Physics and Reactor Safety (2013, Štrbské Pleso, Slovakia)
Reactor physics experiments and code validation (benchmarks)
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.