The development of NekRS, a GPU-oriented thermal-fluids simulation code based on the
spectral element method (SEM) is described. For performance portability, the code is based …

Efficient exploitation of exascale architectures requires rethinking of the numerical
algorithms used in many large-scale applications. These architectures favor algorithms that …

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 …

This paper demonstrates a multiphysics solver for pebble-bed reactors, in particular, for
Berkeley's pebble-bed-fluoride-salt-cooled high-temperature reactor (PB-FHR)(Mark I …

Nek5000/RS, a highly-performant open-source spectral element code, has recently
achieved an unprecedented milestone in the simulation of nuclear reactors: the first full core …

The understanding, modeling and control of the cycle-to-cycle variation (CCV) in the modern
internal combustion engine (ICE) is a key scientific challenge to achieve stable engine …

Multi-cycle direct numerical simulations (DNS) of a laboratory-scale engine at technically
relevant engine speeds (1500 and 2500 rpm) are performed to investigate the transient …

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

Low-order finite element (FE) systems are considered as preconditioners for spectral
element (SE) discretizations of the Poisson problem in canonical and complex domains. The …

Nek5000/RS is a highly-performant open-source spectral element code for simulation of
incompressible and low-Mach fluid flow, heat transfer, and combustion with a particular …