English: The Exascale Computing Project‘s (ECP’s) ExaSMR: Coupled Monte Carlo Neutronics and Fluid Flow Simulation of Small Modular Reactors focuses on improving the ability to accurately predict and analyze how nuclear reactors function to ensure their operation is safe, reliable, and economical. The project is particularly focused on a class of reactors known as small modular reactors (SMRs). Conventional nuclear reactors are usually limited to locations with large populations, but SMRs are customizable and could potentially provide rural areas with an efficient and affordable source of electricity.

With petascale systems like Summit, scientists can simulate how radiation particles disburse throughout a reactor at a specific point in time. These simulations provide useful insights into reactor behavior such as the amount and location of heat generation, as well as a way to test the viability of more advanced designs.

Read more: www.olcf.ornl.gov/2019/05/07/science-at-exascale-simulati...