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Monday, February 02, 2009
10:00 AM - 11:00 AM
CNLS Conference Room (TA-3, Bldg 1690)


Fully coupled solution methods for nuclear fuel performance analysis

Chris Newman
Multiphysics Methods Group, Idaho National Laboratory

This presentation examines various mathematical and computational issues that impact the thermomechanical response of reactor fuel and are thus important to the development of INL's fuel performance code, BISON. The code employs advanced methods for solving coupled partial differential equation systems that describe multidimensional fuel thermomechanics. BISON is designed for fully coupled, steady and transient analysis, and is developed to be efficient on both desktop computers and in massively parallel environments. It employs physics-based preconditioned Jacobian-free Newton-Krylov solution methods and uses modern software engineering principles to form a robust, extensible software architecture. This discussion summarizes the current status of BISON and demonstrates results on selected 3D fuel performance calculations.

Host: Mikhail Shashkov, T-7