Implementation and verification of the SDM in the titan 3-D SN transport code

Nathan Roskoff, William Walters, Alireza Haghighat, Ce Yi, Glenn Sjoden

Research output: Contribution to conferencePaperpeer-review

Abstract

The subgroup decomposition method (SDM) has recently been developed as an improvement over the consistent generalized energy condensation theory for treatment of the energy variable in deterministic particle transport problems. By explicitly preserving reaction rates of the fine-group energy structure, the SDM directly couples a consistent coarse-group transport calculation with a set of fixed-source “decomposition sweeps” to provide a fine-group flux spectrum. This paper will outline the implementation of the SDM into a three-dimensional, SN deterministic transport code such as TITAN. The new version of TITAN, TITAN-SDM, is tested using a 1-D benchmark problem based on the High Temperature Engineering Test Reactor (HTTR) in Japan. In addition to accuracy, this study examines the efficiency of the SDM algorithm in a 3-D SN transport code.

Original languageEnglish (US)
StatePublished - 2014
Event2014 International Conference on Physics of Reactors, PHYSOR 2014 - Kyoto, Japan
Duration: Sep 28 2014Oct 3 2014

Conference

Conference2014 International Conference on Physics of Reactors, PHYSOR 2014
CountryJapan
CityKyoto
Period9/28/1410/3/14

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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