Hybrid PN-SN Calculations with SAAF for the Multiscale Transport Capability in Rattlesnake
Conference
·
OSTI ID:1357925
Two interface conditions, the Lagrange multiplier method and the upwinding method, for hybrid \pn-\sn calculations is proposed for the self-adjoint angular flux (SAAF) formulation of the transport equation using the continuous finite element method (FEM) for spatial discretization. These interface conditions are implemented in Rattlesnake, the radiation transport application built on MOOSE, for the on-going multiscale transport simulation effort at INL. For smoothing the solution at the interface for the Lagrange multiplier method, a method based on \sn Lagrange interpolation on the sphere is proposed. Numerical results indicate that the interface conditions give the expected convergence.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- DOE Contract Number:
- DE-AC07-05ID14517
- OSTI ID:
- 1357925
- Report Number(s):
- INL/CON-15-36442
- Resource Relation:
- Conference: PHYSOR 2016, Sun Valley, ID, May 1–5, 2016
- Country of Publication:
- United States
- Language:
- English
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