The talk discusses a new derivation of the multigroup transport equations, that maintain angle-independency in the total cross section and homogeneity in a material region. In this HIRE theory, partial current discontinuity factors (PCDFs) at the material region interface play a crucial role in providing energy condensation equivalence. The PCDFs are efficiently determined by the Jacobian-free Newton-Krylov (JFNK) procedure.
Following his Ph.D. in nuclear engineering from University of California at Berkeley in 1980, he worked at Science Applications, Inc in Palo Alto and at Brookhaven National Laboratory in Long Island. In 1987, he joined the faculty at Korea Advanced Institute of Science and Technology (KAIST) in Korea, where he has been mostly involved in teaching and research in reactor physics and neutron transport computational methods. He became a professor emeritus in September 2014. He is Associate Editor of Nuclear Science and Engineering, and Fellow of American Nuclear Society.
