Generating unstructured nuclear reactor core meshes in parallel

Jain, Rajeev; Tautges, Timothy J.

doi:10.1016/j.proeng.2014.10.396

Title: Generating unstructured nuclear reactor core meshes in parallel

Abstract

Recent advances in supercomputers and parallel solver techniques have enabled users to run large simulations problems using millions of processors. Techniques for multiphysics nuclear reactor core simulations are under active development in several countries. Most of these techniques require large unstructured meshes that can be hard to generate in a standalone desktop computers because of high memory requirements, limited processing power, and other complexities. We have previously reported on a hierarchical lattice-based approach for generating reactor core meshes. Here, we describe efforts to exploit coarse-grained parallelism during reactor assembly and reactor core mesh generation processes. We highlight several reactor core examples including a very high temperature reactor, a full-core model of the Korean MONJU reactor, a ¼ pressurized water reactor core, the fast reactor Experimental Breeder Reactor-II core with a XX09 assembly, and an advanced breeder test reactor core. The times required to generate large mesh models, along with speedups obtained from running these problems in parallel, are reported. A graphical user interface to the tools described here has also been developed.

Authors:

Jain, Rajeev ^[1]; Tautges, Timothy J. ^[2]

Argonne National Lab. (ANL), Argonne, IL (United States)
CD-Adapco, Austin, TX (United States)

Publication Date:: Fri Oct 24 00:00:00 EDT 2014

Research Org.:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Nuclear Energy (NE); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)

OSTI Identifier:: 1196380

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Procedia Engineering

Additional Journal Information:: Journal Volume: 82; Journal Issue: C; Journal ID: ISSN 1877-7058

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 97 MATHEMATICS AND COMPUTING; 22 GENERAL STUDIES OF NUCLEAR REACTORS; nuclear reactor core mesh; parallel mesh generation; MeshKit; RGG; AssyGen; CoreGen

Citation Formats


                    Jain, Rajeev, and Tautges, Timothy J. Generating unstructured nuclear reactor core meshes in parallel.  United States: N. p., 2014. 
Web.  doi:10.1016/j.proeng.2014.10.396.

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                    Jain, Rajeev, & Tautges, Timothy J. Generating unstructured nuclear reactor core meshes in parallel.  United States.  https://doi.org/10.1016/j.proeng.2014.10.396

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                    Jain, Rajeev, and Tautges, Timothy J. Fri .  
"Generating unstructured nuclear reactor core meshes in parallel".  United States.  https://doi.org/10.1016/j.proeng.2014.10.396.  https://www.osti.gov/servlets/purl/1196380.

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@article{osti_1196380,

  title        = {Generating unstructured nuclear reactor core meshes in parallel},

  author       = {Jain, Rajeev and Tautges, Timothy J.},

  abstractNote = {Recent advances in supercomputers and parallel solver techniques have enabled users to run large simulations problems using millions of processors. Techniques for multiphysics nuclear reactor core simulations are under active development in several countries. Most of these techniques require large unstructured meshes that can be hard to generate in a standalone desktop computers because of high memory requirements, limited processing power, and other complexities. We have previously reported on a hierarchical lattice-based approach for generating reactor core meshes. Here, we describe efforts to exploit coarse-grained parallelism during reactor assembly and reactor core mesh generation processes. We highlight several reactor core examples including a very high temperature reactor, a full-core model of the Korean MONJU reactor, a ¼ pressurized water reactor core, the fast reactor Experimental Breeder Reactor-II core with a XX09 assembly, and an advanced breeder test reactor core. The times required to generate large mesh models, along with speedups obtained from running these problems in parallel, are reported. A graphical user interface to the tools described here has also been developed.},

  doi          = {10.1016/j.proeng.2014.10.396},

  journal      = {Procedia Engineering},

  number       = C,

  volume       = 82,

  place        = {United States},

  year         = {Fri Oct 24 00:00:00 EDT 2014},

  month        = {Fri Oct 24 00:00:00 EDT 2014}

}

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Works referenced in this record:

A Procedure for Tetrahedral Boundary Layer Mesh Generation
journal, April 2002

Bottasso, C. L.; Detomi, D.
Engineering with Computers, Vol. 18, Issue 1
DOI: 10.1007/s003660200006

Creating geometry and mesh models for nuclear reactor core geometries using a lattice hierarchy-based approach
journal, September 2011

Tautges, Timothy J.; Jain, Rajeev
Engineering with Computers, Vol. 28, Issue 4
DOI: 10.1007/s00366-011-0236-8

Spatial Capacity of UWB Networks with Space-Time Focusing Transmission
journal, December 2010

Tian, Yafei; Yang, Chenyang
EURASIP Journal on Wireless Communications and Networking, Vol. 2010, Issue 1
DOI: 10.1155/2010/678490

A Procedure for Tetrahedral Boundary Layer Mesh Generation
journal, April 2002

Bottasso, C. L.; Detomi, D.
Engineering with Computers, Vol. 18, Issue 1
DOI: 10.1007/s003660200006

Works referencing / citing this record:

Array-based Hierarchical Mesh Generation in Parallel
journal, January 2015

Ray, Navamita; Grindeanu, Iulian; Zhao, Xinglin
Procedia Engineering, Vol. 124
DOI: 10.1016/j.proeng.2015.10.140

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Title: Generating unstructured nuclear reactor core meshes in parallel

Abstract

Citation Formats

A Procedure for Tetrahedral Boundary Layer Mesh Generation journal, April 2002

Creating geometry and mesh models for nuclear reactor core geometries using a lattice hierarchy-based approach journal, September 2011

Spatial Capacity of UWB Networks with Space-Time Focusing Transmission journal, December 2010

A Procedure for Tetrahedral Boundary Layer Mesh Generation journal, April 2002

Array-based Hierarchical Mesh Generation in Parallel journal, January 2015

A Procedure for Tetrahedral Boundary Layer Mesh Generation
journal, April 2002

Creating geometry and mesh models for nuclear reactor core geometries using a lattice hierarchy-based approach
journal, September 2011

Spatial Capacity of UWB Networks with Space-Time Focusing Transmission
journal, December 2010

A Procedure for Tetrahedral Boundary Layer Mesh Generation
journal, April 2002

Array-based Hierarchical Mesh Generation in Parallel
journal, January 2015