Radiation Transport Methods (RTM)

Delivers next-generation radiation transport tools to the virtual Reactor

RTM Vision Statement

Objectives and Strategies

  • Next generation, nonproprietary, scalable reactor simulation tools for Virtual Environment for Reactor Applications (VERA)
  • Utilize deterministic and stochastic transport methodologies to achieve multiple goals:
    • Provide a fast-running core simulator on industry-class computing hardware for engineering analysis
    • Provide the most accurate simulations possible for benchmarking and validation using leadership class HPC hardware
  • Leverage NE, DOE, Science, and NNSA efforts

Requirements Drivers

  • Physics fidelity required for accurate prediction of CASL challenge problems
  • Parallel-scalable algorithms, implemented on the latest parallel architectures
  • Pin-resolved 3D full-core transport with radial, azimuthal, and axial resolution
  • Transport calculation with explicit geometry
    • Model fuel pins, clad, shroud, grid spacers, etc
  • Resonance self-shielding model
    • Isotopic distribution, temperature distribution
  • Subpin level depletion
  • Short (RIA), medium (Xenon) and long (Depletion) term time-dependent calculations

Outcomes and Impact

  • Radiation Transport packages integrated within VERA for fully-coupled reactor analysis
    • Stochastic Transport Code: SHIFT
    • Deterministic Transport Code: MPACT
  • Publication of new methods that will enhance the state-of-the-art of reactor analysis
  • Integration of innovative technologies into VERA to provide next-generation capabilities for reactor analysis