@inproceedings{0e051a6b5e9d445e8d8119f692a754f3,
title = "Resolution of double heterogeneity in direct transport calculation employing subgroup method and method of characteristics",
abstract = "The double heterogeneity (DH) problem encountered in the neutronic analysis of the particulate fuel bearing cores is resolved in a direct whole core transport calculation code which employs the subgroup method for the resonance treatment and the method of characteristics (MOC) for transport calculation. The Sanchez's method for DH treatment in the MOC calculation which utilizes the effective stochastic cross section of the homogenized composite obtained from the analytic solution of the renewal equation is implemented first in the subgroup level dependent transport calculation in order to determine the shielded cross section and then in the main transport calculation. The effectiveness of this resolution is assessed for a group of typical fuel lattices of a very high temperature reactor by comparing with the Monte Carlo solutions for various configurations at several temperatures. It turns out that the double heterogeneity effect amounting upto 4000 pcm is captured well (errors around 100 pcm) with the implemented DH resolution schemes.",
author = "Leonid Pogosbekyan and Kim, {Gwan Young} and Kim, {Kang Seog} and Cho, {Jin Young} and Joo, {Han Gyu}",
year = "2008",
language = "English",
isbn = "9781617821219",
series = "International Conference on the Physics of Reactors 2008, PHYSOR 08",
publisher = "Paul Scherrer Institut",
pages = "413--419",
booktitle = "International Conference on the Physics of Reactors 2008, PHYSOR 08",
note = "International Conference on the Physics of Reactors 2008, PHYSOR 08 ; Conference date: 14-09-2008 Through 19-09-2008",
}