Discrete element simulation of Pebble Bed Reactors on graphics processing units

D Reger, E Merzari, P Balestra, R Stewart… - Annals of Nuclear …, 2023 - Elsevier
Prediction of pebble positions in a Pebble Bed Reactor (PBR) is necessary for both reactor
physics and thermal hydraulics simulations as the arrangement of pebbles has a significant …

Experimental investigation of the variation of the local gas velocities in a cold flow pebble bed reactor (PBR) using a hot wire anemometry technique

M Alshammari, A Alalou, HA Alhameedi… - … Engineering and Design, 2023 - Elsevier
Obtaining accurate results and new benchmark data for the local velocity of the gas flowing
within the pebble bed reactor (PBR) is a key step for understanding and benchmarking …

Experimental investigation of the convective heat transfer coefficients at different angular orientations inside the void in a cold flow pebble bed reactor using a non …

M Alshammari, A Alalou, S Aldawood… - Applied Thermal …, 2024 - Elsevier
This study focuses on investigating the effect of the surface location of the pebble inside the
bed, by varying the angular orientation of the heat transfer pebble probe and the velocity of …

Effect of pebble size distribution and wall effect on inner packing structure and contact force distribution in tritium breeder pebble bed

B Gong, H Cheng, Y Feng, X Luo, L Wang, X Wang - Energies, 2021 - mdpi.com
In the tritium breeding blanket of nuclear fusion reactors, the heat transfer behavior and
thermal-mechanical response of the tritium breeder pebble bed are affected by the inner …

Integrated internal-external thermal modeling for packed pebble beds

JY Seo, ES Kim, YB Jo - Powder Technology, 2024 - Elsevier
In this study, an integrated external-internal thermal DEM model is introduced in a GPU
environment. The external model considers contact conduction and radiation, exhibiting …

Investigation of convective heat transfer in a cold flow pebble bed nuclear reactor using advanced pebble probe heat transfer sensor

M Alshammari, A Alalou, S Aldawood, B Qi… - … Thermal and Fluid …, 2024 - Elsevier
The aim of this study was to investigate the local heat transfer coefficients between the
pebbles and the coolant gas in a PBR using an advanced measurement technique that …

Measurement of acceleration and angular velocity of particles during a 3D silo discharge

T Mu, Y Li, Q Chen, R Li, H Yang - Particuology, 2024 - Elsevier
Accurate measurement of the three-dimensional (3D) movement of discrete particles is
crucial for comprehending complex granular rheology in silos. In this paper, the acceleration …

[PDF][PDF] Uncoupled DEM Simulation to Investigate the Impact of Coolant flow on Pebble flow in a Pebble Bed Reactor

MS Malik, J Chen, A Di Fulvio, CS Brooks, TP Grunloh - researchgate.net
The pebble bed reactor (PBR) is a type of high-temperature gas-cooled reactor (HTGR)
among the generation-IV nuclear reactor designs. TRISO-fueled pebbles flow through the …