CASL

Materials Performance and Optimization (MPO)

Enabling Improved Fuel Performance through Predictive Simulation

Objectives and Strategies

  • Develop improved materials performance models for fuels, cladding, and structural materials, and integrate those models into a fuel system performance and response capability
  • Identification of operating and safety margins as the performance metric for successful application of CASL-developed fuel modeling capabilities

Requirements Drivers

  • Deliver engineering scale fuel performance models and materials physics-based constitutive models to enable CASL solutions
  • Deliver improved physics and chemistry insight via constitutive relations and behavioral models
  • Successfully work across Focus Areas to integrate complex, multi-physics solutions required for predicting reactor operational impacts & integrating fuel performance tools into the VERA-Core Simulator

Outcomes and Impact

  • Successfully demonstrated capability for predicting CRUD and pellet-clad interaction (PCI), and working to fully benchmark and improve predictability through implementing improved models of key phenomena
  • Demonstrated improvements in thermodynamic databases for CRUD species
  • Development of advanced models of fretting wear
  • Improved material property models, with improved physical fidelity, to enable engineering scale fuel performance predictions