Verification of the Code DYN3D/R with the Help of International Benchmarks

• Main Authors: Grundmann, Ulrich, Rohde, Ulrich
• Language: English
• Published: Forschungszentrum Rossendorf 2010
• Online Access: http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-30991; https://hzdr.qucosa.de/id/qucosa%3A21927; https://hzdr.qucosa.de/api/qucosa%3A21927/attachment/ATT-0/

Different benchmarks for reactors with quadratic fuel assemblies were calculated with the code DYN3D/R. In this report comparisons with the results of the reference solutions are carried out. The results of DYN3D/R and the reference calculation for the eigenvalue keff and the power distribution are shown for the steady-state 3-dimensional IAEA-Benchmark. The results of NEACRP-Benchmarks on control rod ejections in a standard PWR were compared with the reference solutions published by the NEA Data Bank. For assessing the accuracy of DYN3D/R results in comparison to other codes the deviations to the reference solutions are considered. Detailed comparisons with the published reference solutions of the NEA-NSC Benchmarks on uncontrolled withdrawal of control rods are made. The influence of the axial nodalization is also investigated. All in all, a good agreement of the DYN3D/R results with the reference solutions can be seen for the considered benchmark problems.