DEM simulations in nuclear engineering: a review of recent progress

R Li, G Duan, M Sakai - Journal of Nuclear Science and …, 2024 - Taylor & Francis
In nuclear engineering, solid particles are associated with numerous processes, such as
solid–fluid flows in pebble bed reactors, coating during fuel fabrication, and debris bed …

Parameter analysis and wall effect of radiative heat transfer for CFD-DEM simulation in nuclear packed pebble bed

H Wu, N Gui, X Yang, J Tu, S Jiang - Experimental and Computational …, 2021 - Springer
In the heat transportation of core of high temperature gas-cooled nuclear reactor (HTGR),
radiative heat transfer plays a significant role in the CFD-DEM simulations. The numerical …

A tree-based automated machine learning approach of the obstructed view factor of thermal radiation in nuclear pebble beds

H Wu, S Hao, F Niu, J Tu - Progress in Nuclear Energy, 2024 - Elsevier
For the nuclear pebble bed of the high temperature gas-cooled reactor (HTGR), a tree-
based automated machine learning approach is developed to discuss the complicated …

A data-driven deep learning model of radiative heat transfer in dense granular systems

H Wu, S Hao, F Niu, J Tu, S Jiang - Annals of Nuclear Energy, 2022 - Elsevier
Radiative heat transfer has attracted increasing research interest in various dense granular
systems, including large-scale nuclear pebble-bed reactors, fusion breeder blankets …

Analysis and evaluations of four models of thermal radiation for densely packed granular systems

H Wu, N Gui, X Yang, J Tu, S Jiang - Chemical Engineering Science, 2020 - Elsevier
Thermal radiation is an important part of heat transfer in granular systems, such as the
packed pebble bed of high-temperature gas-cooled reactor (HTGR), bubbling fluidized bed …

GPU-DEM-based heat transfer model for an HTGR pebble bed

Q Zou, N Gui, X Yang, J Tu, S Jiang - International Journal of Thermal …, 2024 - Elsevier
Based on the discrete element method (DEM) and GPU parallel computing, a particle heat
transfer model is developed to simulate the heat transfer in a pebble bed of the high …

[HTML][HTML] Numerical simulation on fluid flow and temperature prediction of motorcycles based on CFD

L Tan, Y Yuan, L Tang, C Huang - Alexandria Engineering Journal, 2022 - Elsevier
The temperature distributions of solid parts in motorcycle is of significance to give an
quantitative cooling performance evaluation for assuring the feasible running of motorcycles …

Numerical simulation for the determination of the radiative properties of spherical packed bed porous media: A COMSOL Multiphysics Study

C Bouraoui, F Ben Nejma - Advances in Mechanical …, 2023 - journals.sagepub.com
The determination of the radiative properties of porous media has become a critical issue in
various industrial and engineering applications. The aim of this paper is to characterize the …

An enhanced and optimized Monte Carlo method to calculate view factors in packed beds

E Cortés, D Gaviño, I Calderón-Vásquez… - Applied Thermal …, 2023 - Elsevier
Comprehensive radiation studies on packed beds require the estimation of view factors
between the surfaces, which often computationally expensive. This paper proposes a novel …

A thermal resistance model of conduction–thermal radiation heat transfer in pebble-bed nuclear reactors

H Wu, F Niu, N Gui, X Yang, J Tu, S Jiang - … and Computational Multiphase …, 2024 - Springer
The pebble-bed high-temperature gas-cooled reactor (HTGR) is an advanced nuclear
system with inherent safety. The nuclear reactor is operated in high-temperature ranges and …