Computational fluid dynamics investigation of thermal-hydraulic characteristics in a simplified pebbled bed modular reactor core using different arrangements of fuel elements

Bai, Y, Gui, N, Yang, X, Tu, J and Jiang, S 2018, 'Computational fluid dynamics investigation of thermal-hydraulic characteristics in a simplified pebbled bed modular reactor core using different arrangements of fuel elements', Journal of Computational Multiphase Flows, vol. 10, no. 3, pp. 119-127.


Document type: Journal Article
Collection: Journal Articles

Attached Files
Name Description MIMEType Size
n2006088012.pdf Published Version application/pdf 1.60MB
Title Computational fluid dynamics investigation of thermal-hydraulic characteristics in a simplified pebbled bed modular reactor core using different arrangements of fuel elements
Author(s) Bai, Y
Gui, N
Yang, X
Tu, J
Jiang, S
Year 2018
Journal name Journal of Computational Multiphase Flows
Volume number 10
Issue number 3
Start page 119
End page 127
Total pages 9
Publisher Sage
Abstract High-temperature gas-cooled reactor is a kind of advanced nuclear reactor in which the core is packed with spherical fuel elements. In high-temperature gas-cooled reactors, the operating temperature is higher than that in ordinary light water reactors. In an attempt to analyze the flow pattern and heat transfer situation to provide reference for the safe operation of the pebble bed reactors, a segment of simplified high-temperature gas-cooled reactor core is simulated with computational fluid dynamics method. Four kinds of arrangement, including simple cubic, body-centered cubic, face-centered cubic, and a combination structure of body-centered cubic and face-centered cubic, are studied, respectively. Based on the simulation results, higher heat transfer capability and lower pebble temperature are obtained in the case with the most compact arrangement. The drag coefficient (Cd) for four arrangements with different inlet Reynolds number (Re) is obtained and relationship between Re and Cd is analyzed. In addition, a simulation with a broken fuel element in the body-centered cubic fluid domain has been performed. The results show that the presence of broken fuel may result in uneven flow, which will change the heat transfer condition. So it is better to avoid broken fuel element in a high-temperature gas-cooled reactor.
Subject Numerical Modelling and Mechanical Characterisation
Keyword(s) Computational fluid dynamics
Flow pattern
Fuel arrangement
Heat transfer
High-temperature gas-cooled reactor
Pebble bed
DOI - identifier 10.1177/1757482X17746923
Copyright notice © The Author(s) 2017. Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/)
ISSN 1757-482X
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 0 times in Thomson Reuters Web of Science Article
Scopus Citation Count Cited 0 times in Scopus Article
Altmetric details:
Access Statistics: 16 Abstract Views, 4 File Downloads  -  Detailed Statistics
Created: Thu, 31 Jan 2019, 11:26:00 EST by Catalyst Administrator
© 2014 RMIT Research Repository • Powered by Fez SoftwareContact us