ENRICO is a coupled application developed under the US Department of Energy's Exascale
Computing Project (ECP) targeting the modeling of advanced nuclear reactors. It couples …

We examine large-eddy-simulation modeling approaches and computational performance
of two open-source computational fluid dynamics codes for the simulation of atmospheric …

Multiphysics interactions between radiation transport and thermal-fluids play an important
role in fission reactor design. Progress and challenges in Monte Carlo-based multiphysics …

We demonstrate NekRS performance results on various advanced GPU architectures.
NekRS is a GPU-accelerated version of Nek5000 that targets high performance on exascale …

We present large-eddy-simulation (LES) modeling approaches for the simulation of
atmospheric boundary layer turbulence that are of direct relevance to wind energy …

As the need for fusion as a clean, sustainable, and abundant energy source grows
internationally, so does the need for multiphysics, computational tools to model, study, and …

Abstract Development and application of the open-source GPU-based fluid-thermal
simulation code, NekRS, are described. Time advancement is based on an efficient kth …

We present high-fidelity large-eddy-simulation (LES) modeling approaches for the turbulent
atmospheric boundary layer (ABL) flows. Wind energy is a prime example of an application …

We discuss pioneering heat and fluid flow simulations of fusion and fission energy systems
with NekRS on exascale computing facilities, including Frontier and Aurora. The Argonne …

We present Validation and Verification (V & V) study of two high-order spectral element
method (SEM) based Computational Fluid Dyanimcs (CFD) codes that we will utilize for …