Additionally, the flexibility to easily include new physical and material models and straightforward ability to couple to lower length scale simulations makes BISON a powerful tool for simulation of coated-particle fuel. The code provides rapid solu- tions of 1D spherically symmetric and 2D axially symmetric models, and its scalable parallel processing capability allows for solutions of large, complex 3D models. The code’s ability to use the same algorithms and models to solve problems of varying dimensionality from 1D through 3D is demonstrated. Multiple TRISO-coated particles of increasing geo- metric complexity are considered. Code verification based on a recent IAEA benchmarking exercise is described, and excellent comparisons are reported. The governing equations and material models applicable to particle fuel and implemented in BISON are outlined.
ABSTRACT Multidimensional multiphysics analysis of TRISO-coated particle fuel using the BISON finite element nuclear fuels code is described.
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