Verification of Multiphysics software: Space and time convergence studies for nonlinearly coupled applications

Conference · Fri May 01 00:00:00 EDT 2009

OSTI ID:957534

Ragusa, Jean C; Mahadevan, Vijay; Mousseau, Vincent A

High-fidelity modeling of nuclear reactors requires the solution of a nonlinear coupled multi-physics stiff problem with widely varying time and length scales that need to be resolved correctly. A numerical method that converges the implicit nonlinear terms to a small tolerance is often referred to as nonlinearly consistent (or tightly coupled). This nonlinear consistency is still lacking in the vast majority of coupling techniques today. We present a tightly coupled multiphysics framework that tackles this issue and present code-verification and convergence analyses in space and time for several models of nonlinear coupled physics.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: DE-AC07-99ID-13727
• OSTI ID: 957534
• Report Number(s): INL/CON-09-15514; TRN: US1000628
• Resource Relation: Conference: International Conference on Mathematics, Computaional Methods & reactor physics (M&C 2009),Saratoga Springs, New York,05/03/2009,05/07/2009
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING
CONVERGENCE
PHYSICS
REACTOR PHYSICS
REACTORS
SIMULATION
TOLERANCE
VERIFICATION
multiphysics
Verification