NekRS, a GPU-accelerated spectral element Navier–Stokes solver

P Fischer, S Kerkemeier, M Min, YH Lan, M Phillips… - Parallel Computing, 2022 - Elsevier
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 …

High-fidelity simulation of mixing phenomena in large enclosures

V Coppo Leite, E Merzari, J Mao, V Petrov… - Nuclear Science and …, 2024 - Taylor & Francis
In the present work, two large eddy simulations (LESs) of single isothermal jets discharging
into large enclosure facilities are proposed. The geometries and tested flow conditions …

Towards exascale for wind energy simulations

M Min, M Brazell, A Tomboulides… - … Journal of High …, 2024 - journals.sagepub.com
We examine large-eddy-simulation modeling approaches and computational performance
of two open-source computational fluid dynamics codes for the simulation of atmospheric …

Tuning spectral element preconditioners for parallel scalability on GPUs

M Phillips, S Kerkemeier, P Fischer - … of the 2022 SIAM Conference on Parallel …, 2022 - SIAM
The Poisson pressure solve resulting from the spectral element discretization of the
incompressible Navier-Stokes equation requires fast, robust, and scalable preconditioning …

A hybrid domain overlapping method for coupling System Thermal Hydraulics and CFD codes

A Huxford, VC Leite, E Merzari, L Zou, V Petrov… - Annals of Nuclear …, 2023 - Elsevier
A hybrid multiscale coupling methodology based on a domain overlapping approach has
been developed for coupling System Thermal Hydraulics (STH) and Computational Fluid …

[PDF][PDF] Coupled monte carlo and thermal-hydraulics modeling of a prismatic gas reactor fuel assembly using cardinal

A Novak, D Andrs, P Shriwise, D Shaver… - Proceedings …, 2022 - researchgate.net
Cardinal is a MOOSE application that couples OpenMC Monte Carlo transport and NekRS
computational fluid dynamics to the MOOSE framework, closing the neutronics and thermal …

Coupled Monte Carlo transport and conjugate heat transfer for wire-wrapped bundles within the MOOSE framework

AJ Novak, P Shriwise, PK Romano… - Nuclear Science and …, 2023 - Taylor & Francis
Cardinal is an open-source application that couples OpenMC Monte Carlo transport and
NekRS computational fluid dynamics (CFD) to the Multiphysics Object-Oriented Simulation …

Spectral element methods for turbulence

PF Fischer, AG Tomboulides - Numerical Methods in Turbulence Simulation, 2023 - Elsevier
This chapter introduces spectral element methods (SEMs), which extend the efficiencies of
high-order global tensor-product bases of spectral methods to unstructured multidomain …

Reducing Communication in the Solution of Linear Systems

NS Lindquist - 2023 - trace.tennessee.edu
There is a growing performance gap between computation and communication on modern
computers, making it crucial to develop algorithms with lower latency and bandwidth …