Progress on coarse-mesh solidification modeling through an upscaling physics-based data-driven calibration
This research explores a fine-to-coarse mesh upscaling strategy for modeling solidification under turbulent flow conditions, with a specific focus on molten salt flows relevant to Generation-IV nuclear reactors. We propose modifications to the baseline solidification enthalpy–porosity coarse-mesh model employing a physics-informed approach that requires calibration from a high-resolution model. A data-driven approach is employed to […]
Deterministic High-Fidelity Neutronics Simulation of Pebble Bed Reactors Using Pebble Tracking Transport
The pebble tracking transport (PTT) algorithm offers a high-fidelity deterministic approach for neutron transport for pebble bed reactors (PBRs). This approach requires the mesh for the active-core region to consist exclusively of tetrahedral elements, where each node in the pebble-packing region represents a pebble centroid. This paper investigates the application of PTT for full-scale PBRs, […]
Development of a Single-Phase, Transient, Subchannel Code, within the MOOSE Multi-Physics Computational Framework
Subchannel codes have been widely used for thermal-hydraulics analyses in nuclear reactors. This paper details the development of a novel subchannel code within the Idaho National Laboratory’s (INL) Multi-physics Object-Oriented Simulation Environment (MOOSE). MOOSE is a parallel computational framework targeted at the solution of systems of coupled, nonlinear partial differential equations, that often arise in […]