This paper outlines the capabilities of a new fuel modeling tool able to analyze either 2D axisymmetric or fully 3D models. Many current modeling tools are strictly 2D axisymmetric or even 1.5D. Important aspects of fuel rod behavior, for example pellet-clad mechanical interaction (PCMI), fuel fracture, oxide formation, non-axisymmetric cooling, and response to fuel manufacturing defects, are inherently multidimensional in addition to being complicated multiphysics problems.
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We also initiate a modest suite of test problems encompassing features present in many applications.Ī MULTIDIMENSIONAL AND MULTIPHYSICS APPROACH TO NUCLEAR FUEL BEHAVIOR SIMULATION From our study, we summarize challenges and forecast opportunities. We examine several of these, expose some commonalities among them, and attempt to extrapolate best practices to future systems. A variety of software frameworks for multiphysics applications have been constructed and refined within disciplinary communities and executed on leading-edge computer systems. Mathematical analysis of multiphysics coupling in this form is not always practical for realistic applications, but model problems representative of applications discussed herein can provide insight. Many diverse multiphysics applications can be reduced, en route to their computational simulation, to a common algebraic coupling paradigm. We consider multiphysics applications from algorithmic and architectural perspectives, where 'algorithmic' includes both mathematical analysis and computational complexity and 'architectural' includes both software and hardware environments. Additional information about the workshop, including relevant reading and presentations on multiphysics issues in applications, algorithms, and software, is available via.
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This report is an outcome of the workshop Multiphysics Simulations: Challenges and Opportunities, sponsored by the Institute of Computing in Science (ICiS). (Mathematics and Computer Science) (KAUST and Columbia Univ.) (Lawrence Livermore National Laboratory) (Univ. Multiphysics simulations: challenges and opportunities.Įnergy Technology Data Exchange (ETDEWEB)