In this thesis, we discuss a coupling algorithm to model simplified fast burst reactor dynamics. Kadioglu presented a tightly coupled multiphysics algorithm of diffusion neutronics and linear. An implicit-explicit (IMEX) algorithm was used to follow the dynamical time-scale of the problem. However, as noted by him and his co-authors, the diffusion model does not adequately represent the neutronics of the system due to its small. Our objective is to extend the IMEX algorithm to incorporate transport effects using moment based acceleration concept. We will demonstrate the differences between diffusion and transport models (SN). We will also demonstrate how the introduction of moment based acceleration enables us to isolate the angular flux from coupled multiphysics system by using a discretely consistent lower order (LO) system.
neutron transport, nonlinear diffusion acceleration, IMplicit EXplicit, Multiphysics, Newton method, HOLO, linear mechanics, temperature equation, fast burst reactor dynamics
Level of Degree
de Oliveira, Cassiano
First Committee Member (Chair)
Second Committee Member
Third Committee Member
Patel, Japan. "Efficient Multiphysics Coupling for Fast Burst Reactors in Slab Geometry." (2014). https://digitalrepository.unm.edu/ne_etds/37