Review of thermal-hydraulic issues and studies of lead-based fast reactors

Y Zhang, C Wang, Z Lan, S Wei, R Chen, W Tian… - … and Sustainable Energy …, 2020 - Elsevier
The lead-based reactor is one of the fourth-generation nuclear energy systems with
excellent development prospects. It has attracted much attention because of its unique …

An overview of the AHFM-NRG formulations for the accurate prediction of turbulent flow and heat transfer in low-Prandtl number flows

A Shams, A De Santis, F Roelofs - Nuclear Engineering and Design, 2019 - Elsevier
Turbulent heat transfer is a complex phenomenon, which is ubiquitous in engineering
applications and has challenged turbulence modellers for several decades. In an attempt to …

Status and perspectives of turbulent heat transfer modelling in low-Prandtl number fluids

A Shams, A De Santis, LK Koloszar, AV Ortiz… - … Engineering and Design, 2019 - Elsevier
Thermal-hydraulics is recognized as a key safety challenge in the development of liquid
metal cooled reactors. At nominal operating conditions, the Prandtl number of liquid metals …

Exploration of high-efficiency heat transfer modes in lead-cooled assemblies: A structural optimization based on the SST k-ω-kθ-ɛθ model

J Wu, X Su, Z Gong, J Cai, L Gu - Applied Thermal Engineering, 2024 - Elsevier
Accurately simulating the flow and heat transfer in a compact assembly is a critical concern
in the core design of the lead-cooled fast reactor. The key to numerical heat transfer lies in …

Development of turbulent heat flux model for unsteady forced convective heat transfer of small-to-medium Prandtl-number fluids based on deep learning

LX Chen, C Yuan, HN Zhang, XB Li, Y Ma… - International Journal of …, 2022 - Elsevier
Turbulent heat flux (THF) models are used for the closure of the THF term when solving the
steady/unsteady Reynolds-averaged scalar transport equation to simulate the turbulent heat …

Direct numerical simulation of low-Prandtl fluid flow over a confined backward facing step

J Oder, A Shams, L Cizelj, I Tiselj - International Journal of Heat and Mass …, 2019 - Elsevier
The paper presents the direct numerical simulation (DNS) of a confined backward facing
(BFS) step geometry with a flow of two fluids with Prandtl numbers 0.005 and 0.1. The …

Towards the accurate prediction of the turbulent flow and heat transfer in low-Prandtl fluids

A Shams, A De Santis - International Journal of Heat and Mass Transfer, 2019 - Elsevier
In the numerical simulation of turbulent heat transfer, a reliable representation of the
turbulent flow field is a prerequisite in order to obtain an accurate prediction of the thermal …

The influence of low Prandtl numbers on the turbulent mixed convection in an horizontal channel flow: DNS and assessment of RANS turbulence models

D De Santis, A De Santis, A Shams… - International Journal of …, 2018 - Elsevier
In this paper, the turbulent mixed convection in a channel flow with differentially heated walls
is considered for a fixed Richardson number (Ri b= 0.5) and three different Prandtl numbers …

Numerical study of low Pr flow in a bare 19-rod bundle based on an advanced turbulent heat transfer model

X Li, X Su, L Gu, L Zhang, X Sheng - Frontiers in Energy Research, 2022 - frontiersin.org
Compared to assuming a constant turbulent Prandtl number model, an advanced four-
equation model has the potential to improve the numerical heat transfer calculation accuracy …

Numerical heat transfer to LBE flow in a wire-wrapped 19-rod bundle using an OpenFOAM-based solver: fourParameterFoam

J Wu, X Su, Z Gong, J Cai, L Gu - Nuclear Engineering and Design, 2024 - Elsevier
The LBE-cooled fast reactor (LFR) has received significant attention due to its diverse
applications. However, numerical heat transfer simulations encounter challenges with lead …