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Title: Enhancements to the Combinatorial Geometry Particle Tracker in the Mercury Monte Carlo Transport Code: Embedded Meshes and Domain Decomposition

Abstract

Two enhancements to the combinatorial geometry (CG) particle tracker in the Mercury Monte Carlo transport code are presented. The first enhancement is a hybrid particle tracker wherein a mesh region is embedded within a CG region. This method permits efficient calculations of problems with contain both large-scale heterogeneous and homogeneous regions. The second enhancement relates to the addition of parallelism within the CG tracker via spatial domain decomposition. This permits calculations of problems with a large degree of geometric complexity, which are not possible through particle parallelism alone. In this method, the cells are decomposed across processors and a particles is communicated to an adjacent processor when it tracks to an interprocessor boundary. Applications that demonstrate the efficacy of these new methods are presented.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
952770
Report Number(s):
LLNL-CONF-411198
TRN: US0902597
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: International Conference on Mathematics, Computational Methods & Reactor Physics, Saratoga Springs, NY, United States, May 03 - May 07, 2009
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 99 GENERAL AND MISCELLANEOUS; GEOMETRY; MERCURY; REACTOR PHYSICS; TRANSPORT

Citation Formats

Greenman, G M, O'Brien, M J, Procassini, R J, and Joy, K I. Enhancements to the Combinatorial Geometry Particle Tracker in the Mercury Monte Carlo Transport Code: Embedded Meshes and Domain Decomposition. United States: N. p., 2009. Web.
Greenman, G M, O'Brien, M J, Procassini, R J, & Joy, K I. Enhancements to the Combinatorial Geometry Particle Tracker in the Mercury Monte Carlo Transport Code: Embedded Meshes and Domain Decomposition. United States.
Greenman, G M, O'Brien, M J, Procassini, R J, and Joy, K I. 2009. "Enhancements to the Combinatorial Geometry Particle Tracker in the Mercury Monte Carlo Transport Code: Embedded Meshes and Domain Decomposition". United States. https://www.osti.gov/servlets/purl/952770.
@article{osti_952770,
title = {Enhancements to the Combinatorial Geometry Particle Tracker in the Mercury Monte Carlo Transport Code: Embedded Meshes and Domain Decomposition},
author = {Greenman, G M and O'Brien, M J and Procassini, R J and Joy, K I},
abstractNote = {Two enhancements to the combinatorial geometry (CG) particle tracker in the Mercury Monte Carlo transport code are presented. The first enhancement is a hybrid particle tracker wherein a mesh region is embedded within a CG region. This method permits efficient calculations of problems with contain both large-scale heterogeneous and homogeneous regions. The second enhancement relates to the addition of parallelism within the CG tracker via spatial domain decomposition. This permits calculations of problems with a large degree of geometric complexity, which are not possible through particle parallelism alone. In this method, the cells are decomposed across processors and a particles is communicated to an adjacent processor when it tracks to an interprocessor boundary. Applications that demonstrate the efficacy of these new methods are presented.},
doi = {},
url = {https://www.osti.gov/biblio/952770}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Mar 09 00:00:00 EDT 2009},
month = {Mon Mar 09 00:00:00 EDT 2009}
}

Conference:
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