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

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

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

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

Ken and Mary Alice Lindquist Department of Nuclear Engineering

Research output: Contribution to conference › Paper › peer-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, S_N 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 S_N transport code.

Original language	English (US)
State	Published - 2014
Event	2014 International Conference on Physics of Reactors, PHYSOR 2014 - Kyoto, Japan Duration: Sep 28 2014 → Oct 3 2014

Conference

Conference	2014 International Conference on Physics of Reactors, PHYSOR 2014
Country/Territory	Japan
City	Kyoto
Period	9/28/14 → 10/3/14

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering

Cite this

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title = "Implementation and verification of the SDM in the titan 3-D SN transport code",

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.",

author = "Nathan Roskoff and William Walters and Alireza Haghighat and Ce Yi and Glenn Sjoden",

note = "Publisher Copyright: {\textcopyright} 2014 Westinghouse Electric Company LLC. All Rights Reserved.; 2014 International Conference on Physics of Reactors, PHYSOR 2014 ; Conference date: 28-09-2014 Through 03-10-2014",

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TY - CONF

T1 - Implementation and verification of the SDM in the titan 3-D SN transport code

AU - Roskoff, Nathan

AU - Walters, William

AU - Haghighat, Alireza

AU - Yi, Ce

AU - Sjoden, Glenn

PY - 2014

Y1 - 2014

N2 - 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.

AB - 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.

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M3 - Paper

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T2 - 2014 International Conference on Physics of Reactors, PHYSOR 2014

Y2 - 28 September 2014 through 3 October 2014

ER -

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

Abstract

Conference

All Science Journal Classification (ASJC) codes

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