Toward exascale: overview of large eddy simulations and direct numerical simulations of nuclear reactor flows with the spectral element method in Nek5000

E Merzari, P Fischer, M Min, S Kerkemeier… - Nuclear …, 2020 - Taylor & Francis
At the beginning of the last decade, Petascale supercomputers (ie, computers capable of
more than 1 petaFLOP) emerged. Now, at the dawn of exascale supercomputing, we …

Liquid metal cooled fast reactor thermal hydraulic research development: A review

KT Agbevanu, SK Debrah, EM Arthur, E Shitsi - Heliyon, 2023 - cell.com
The growing interest in fast reactors demands further innovative technologies to enhance
their safety and reliability. Understanding thermal hydraulic activities required for advanced …

PIV measurements of turbulent flows in a 61-pin wire-wrapped hexagonal fuel bundle

T Nguyen, N Goth, P Jones, S Lee, R Vaghetto… - International Journal of …, 2017 - Elsevier
The current work experimentally investigates the flow characteristics in the near-wall region
of the 61-pin wire-wrapped hexagon fuel bundle via the matched-index-of-refraction …

RANS simulations for transition and turbulent flow regimes in wire-wrapped rod bundles

O Bovati, MA Yildiz, Y Hassan, R Vaghetto - … Journal of Heat and Fluid Flow, 2021 - Elsevier
Internal flows through rod assemblies are commonly found in heat exchangers, steam
generators, and nuclear reactors. One of the fuel assembly designs considered for liquid …

Experimental measurements of fluid flow in an 84-pin hexagonal rod bundle with spacer grid for a gas-cooled fast modular reactor

CF Matozinhos, AD Carroll III, C Menezes… - International Journal of …, 2022 - Elsevier
A 50 MWe helium-cooled fast modular reactor (FMR) is under development, and as part of
the Department of Energy Integrated Research Project (IRP), Texas A&M University is …

Invariant analysis of the Reynolds stress tensor for a nuclear fuel assembly with spacer grid and split type vanes

G Busco, E Merzari, YA Hassan - International Journal of Heat and Fluid …, 2019 - Elsevier
Invariant analysis of the Reynolds stress tensor anisotropy can give an accurate and deep
intuitive understanding of the turbulent structure of a turbulent flow. Lumley's triangle has …

[HTML][HTML] Experimental investigation of turbulent wake flows in a helically wrapped rod bundle in presence of localized blockages

T Nguyen, R Vaghetto, Y Hassan - Physics of Fluids, 2020 - pubs.aip.org
In nuclear sodium fast reactors, bundles of rods are tightly packed into a triangular lattice,
enclosed in a hexagonal duct, and each pin is spirally wrapped with a thin wire. Flow …

High fidelity numerical simulations of an infinite wire-wrapped fuel assembly

A Shams, F Roelofs, E Baglietto, EMJ Komen - Nuclear Engineering and …, 2018 - Elsevier
Liquid metal fast reactors (LMFRs) are foreseen to play a relevant role in the future of
nuclear energy, thanks to their increased fuel utilization, high power density and intrinsic …

Thermal-hydraulic study of the LBE-cooled fuel assembly in the MYRRHA reactor: Experiments and simulations

J Pacio, T Wetzel, H Doolaard, F Roelofs… - … Engineering and Design, 2017 - Elsevier
Heavy liquid metals (HLMs), such as lead-bismuth eutectic (LBE) and pure lead are
prominent candidate coolants for many advanced systems based on fast neutrons. In …

Analysis of the turbulent flow in a partially blocked wire-wrapped rod bundle using LES with wall functions

O Bovati, Y Hassan - International Journal of Heat and Fluid Flow, 2022 - Elsevier
One of the most promising nuclear reactor designs is the Liquid-Metal Fast Reactor (LMFR).
Its fuel assembly consists of rods containing the fuel material, arranged in a triangular lattice …