Multischeme transport with upwinding for Rattlesnake code

Technical Report · Mon Jan 01 04:00:00 EST 2018

DOI:https://doi.org/10.2172/1467003· OSTI ID:1467003

Wang, Yaqi ^[1]; DeHart, Mark ^[1]; Laboure, Vincent ^[1]; Schunert, Sebastian ^[1]; Ortensi, Javier ^[1]; Gleicher, Frederick ^[1]

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1. Idaho National Lab. (INL), Idaho Falls, ID (United States)

This report conclude our efforts at INL to make Rattlesnake, the MOOSE-based radiation multigroup transport application, fully support the multischeme transport capability. Specifically, it details all five types of interface condition with upwinding method for coupling eight available discretization schemes within Rattlesnake. These discretization schemes include SN (discrete ordinates method), PN (spherical harmonics expansion method) and diffusion for angular discretization, and continuous finite element method (CFEM) and discontinuous finite element method (DFEM) for spatial discretization. The other type of method based on Lagrange multipliers for coupling schemes based on CFEM has been studied in the past. Besides simple test problems, a more realistic application of multischeme transport for TREAT (transient reactor test facility) experiment modeling are presented. Several enhancements are reviewed at the end which could potentially be useful in the future.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE)
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 1467003
• Report Number(s): INL/EXT--17-44238
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING
Multischeme transport
Rattlesnake
TREAT
Upwinding