Contact

Dr. Susan Dürigen
Reactor Safety

PhD thesis


Neutron Transport in Hexagonal Reactor Cores Modeled by Trigonal-Geometry Diffusion and Simplified P3 Nodal Methods


PhD student:
Susan Duerigen
Supervisor:
Dr. S. Kliem (HZDR), Dr. S. Mittag (HZDR), Prof. Dr. R. Stieglitz (Karlsruhe Institute of Technology), Prof. Dr. K. Ivanov (Pennsylvania State University)
Division:
Reactor Safety
Period:
07/2008–11/2012


DYN3D is a three-dimensional simulation tool for steady-state and transient analyses of various reactor types developed at the HZDR. It is applicable for square and hexagonal fuel assembly geometries and comprises neutron-kinetic and thermal-hydraulic models.

Different reactor types require special calculation algorithms depending on the respective fuel element geometries. In the framework of this PhD work, both a diffusion and a simplified P3 transport model have been developed and implemented on a trigonal basis to compute the neutron distribution in the reactor core. This method is applicable to the analysis of reactor cores with hexagonal fuel assemblies and allows flexible mesh refinement.


Contact

Dr. Susan Dürigen
Reactor Safety