Influence of COMSOL on the Design and Testing of the High Flux Isotope Reactor HB-4 Cold Source: Validation of the Simulation

J. D. Freels
Oak Ridge National Laboratory

This presentation concerns our numerical and experimental research on the High Flux Isotope Reactor HFIR, located at the Oak Ridge National Laboratory.

In this presentation we give a Brief Pictorial Introduction to the HFIR, som physical properties of Supercritical Hydrogen, and Simulations of both natural and forced convection problems using COMSOL Multiphysics.

This presentation also contains a compare with results obtained from simulations with another commercial software. Numerical results are also compared with experimental data.

Keynote speaker's biography: James D. Freels earned a BS and MS in Nuclear Engineering from the University of Tennessee in Knoxville (UTK), after which he joined Science Applications International (now SAIC) of Oak Ridge, Tennessee. There he focused on various contracts involving the digital simulation of physical processes.

In 1983 he joined the Technology for Energy Corporation (TEC) of Knoxville, Tennessee, and continued to focus on digital simulation of physical processes but with an emphasis on the development of new instrumentation systems. During this time, Jim pursued a PhD at UTK.

In 1988 he re-joined SAIC and continued to focus on digital simulation and the development of CFD numerical algorithms. Several years later Jim was hired by the Research Reactors Division of Oak Ridge National Laboratory (ORNL), and in 1992 he earned a PhD in Engineering Science and Mechanics from UTK. His principal duties at ORNL have been related to safety and design analyses of the operating High Flux Isotope Reactor (HFIR) and the development of a neutron cold source soon to become operational at HFIR.

J. D. Freels was one of the keynote speakers at the COMSOL User's Conference, fall 2006 in Boston.