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 …

A computational fluid dynamics study by conjugate heat transfer in OpenFOAM: A liquid cooling concept for high power electronics

A Laitinen, K Saari, K Kukko, P Peltonen… - International Journal of …, 2020 - Elsevier
A conjugate heat transfer (CHT) study of a liquid cooling heat exchanger is carried out using
the open source computational fluid dynamics (CFD) library OpenFOAM. The heat …

Direct numerical simulation and wall-resolved large eddy simulation in nuclear thermal hydraulics

I Tiselj, C Flageul, J Oder - Nuclear Technology, 2020 - Taylor & Francis
The critical review discusses the most accurate methods for description of turbulent flows:
the computationally very expensive direct numerical simulation (DNS) and slightly less …

Influence of buoyancy in a mixed convection liquid metal flow for a horizontal channel configuration

W Guo, A Shams, Y Sato, B Niceno - International Journal of Heat and Fluid …, 2020 - Elsevier
This article presents the direct numerical simulation (DNS) of mixed convection turbulent
heat transfer in a horizontal channel case for liquid lead. Cartesian mesh is used and the …

A new approach for evaluating photosynthetic bio-hydrogen production: The dissipation rate method

X Liu, J Zhao, C He, L Liu, G Li, X Pan, G Xu, C Lu… - Energy, 2023 - Elsevier
A dissipative rate model is established by using the non-equilibrium thermodynamics
method to evaluate photosynthetic bio-hydrogen production process. The mass transfer …

Conjugate heat transfer in spatial laminar-turbulent transitional channel flow

WIM Abregu, EA Dari, FE Teruel - International Communications in Heat …, 2024 - Elsevier
In the present work the simulation of Conjugate Heat Transfer (CHT) in a spatial laminar-
turbulent transitional channel flow for Re= 3420 and Pr= 0.71 is carried out using Direct …

[HTML][HTML] Mixed convection study on the influence of low Prandtl numbers and buoyancy in turbulent heat transfer using DNS

W Guo, HM Prasser - Annals of Nuclear Energy, 2021 - Elsevier
Direct numerical simulation (DNS) is performed to study turbulent heat transfer in Poiseuille-
Rayleigh-Bénard (PRB) flows with low Prandtl numbers in this article. The mesh is Cartesian …

A correlation for the discontinuity of the temperature variance dissipation rate at the fluid-solid interface in turbulent channel flows

C Flageul, I Tiselj, S Benhamadouche… - Flow, Turbulence and …, 2019 - Springer
Discontinuity of the dissipation rate associated with the temperature variance at the fluid-
solid interface is analyzed in a turbulent channel flow at a Reynolds number, based on the …

Direct numerical simulation of turbulent heat transfer in liquid metals in buoyancy-affected vertical channel

W Guo, HM Prasser - International Journal of Heat and Mass Transfer, 2022 - Elsevier
This article investigates the impact of buoyancy force in a vertical channel with combined
natural and forced convection liquid metal flow using direct numerical simulation (DNS). In …

A versatile immersed boundary method for high-fidelity simulation of Conjugate Heat Transfer

RV Cruz, E Lamballais - Journal of Computational Physics, 2023 - Elsevier
A numerical strategy based on an immersed boundary method (IBM) is presented for
performing high-fidelity simulation of thermal hydraulics while including Conjugate Heat …