A review of pebble flow study for pebble bed high temperature gas-cooled reactor

S Jiang, J Tu, X Yang, N Gui - Experimental and Computational …, 2019 - Springer
The pebble bed high temperature gas-cooled reactor is a promising generation-IV reactor,
which uses large fuel pebbles and helium gas as coolant. The pebble bed flow is a …

A review of recent advances in HTGR CFD and thermal fluid analysis

AJ Huning, S Chandrasekaran, S Garimella - Nuclear Engineering and …, 2021 - Elsevier
Abstract The High Temperature Gas-cooled Reactor (HTGR) is an advanced reactor design
being pursued by several different domestic and international organizations due to its high …

On contact point modifications for forced convective heat transfer analysis in a structured packed bed of spheres

SS Bu, J Yang, M Zhou, SY Li, QW Wang… - Nuclear Engineering and …, 2014 - Elsevier
The present paper systematically investigated the appropriateness of different contact point
modification approaches for forced convective heat transfer analysis in structured packed …

Experimental investigation of cross flow mixing in a randomly packed bed and streamwise vortex characteristics using particle image velocimetry and proper …

T Nguyen, R Muyshondt, YA Hassan, NK Anand - Physics of Fluids, 2019 - pubs.aip.org
The study of flow and heat transfer through porous media or randomly packed beds is
important as these configurations are widely used in many engineering applications, for …

Time-resolved PIV measurements in a low-aspect ratio facility of randomly packed spheres and flow analysis using modal decomposition

T Nguyen, E Kappes, S King, Y Hassan, V Ugaz - Experiments in Fluids, 2018 - Springer
This work experimentally investigated the flow characteristics in a facility with randomly
packed spheres at a low-aspect ratio of 4.4. Velocity fields in the near-wall region and in the …

Direct Numerical Simulation and Large Eddy Simulation of a 67-Pebble-Bed Experiment

D Reger, E Merzari, P Balestra, S Schunert… - Nuclear …, 2024 - Taylor & Francis
An in-depth understanding of the flow physics in packed beds is critical for developing
simulation tools for pebble bed reactors. Advances in computing power have now made the …

On the use of (U) RANS and LES approaches for turbulent incompressible single phase flows in nuclear engineering applications

S Benhamadouche - Nuclear Engineering and Design, 2017 - Elsevier
The present paper gives some ideas and guidelines in order to run high quality (U) RANS or
LES computations. The paper starts with (U) RANS approaches, advocating the use of …

Status, perspectives, and added value of high fidelity simulations for safety and design

EMJ Komen, A Mathur, F Roelofs, E Merzari… - Nuclear Engineering and …, 2023 - Elsevier
With the increase in computational power, High Fidelity (HiFi) simulations become
increasingly important to nuclear thermal hydraulics for fundamental understanding of …

Large eddy simulation of a randomly stacked nuclear pebble bed

A Shams, F Roelofs, EMJ Komen, E Baglietto - Computers & Fluids, 2014 - Elsevier
This paper reports large eddy simulation results for a randomly stacked bed of spherical
pebbles, using a second-order accurate, cell-centered finite volume method on an …

Positron emission tomography in pebble beds. Part 2: Graphite particle deposition and resuspension

T Barth, J Kulenkampff, S Bras, M Gründig… - … Engineering and Design, 2014 - Elsevier
The release of radio-contaminated carbonaceous dust from the pebble bed of a high
temperature reactor (HTR) plays a major role for the safety assessment of accidental …