| Abstract Scope |
Molten salt reactors (MSRs) are an advanced nuclear technology with promising attributes such as inherent safety, high thermal efficiency, and the ability to operate at high temperatures. In MSRs, the fuel is dissolved in a halide salt and interacts with reactor materials leading to corrosion which can significantly impact reactor performance, safety and longevity. Effective modeling of corrosion and associated processes, such as leaching, deposition, and chemical species transport, is necessary to ensure safe and reliable operation of MSRs. Since corrosion is an electrochemical process, the Poisson-Nernst-Planck (PNP) model, combined with Butler-Volmer kinetics, has been implemented into MOOSE. A crucial aspect of these models is capturing the time-dependent interfacial flux of reactive elements from alloy to molten salt. This work discusses a multiscale approach, coupling phase-field method with the PNP model, to accurately capture the microstructural effects on the interfacial currents and their impact on macroscale corrosion modeling. |