Colombo, M and Fairweather, M (2016) CFD Simulation of Boiling Flows for Nuclear Reactor Thermal Hydraulic Applications. In: Computer Aided Chemical Engineering. 26th European Symposium on Computer Aided Process Engineering, 12-15 Jun 2016, Portorož, Slovenia. Elsevier , pp. 445-450. ISBN 9780444634283
Abstract
Boiling flows allow removal of significant amounts of heat, provided that the critical heat flux limit is not exceeded. In nuclear reactors, this must be accurately predicted to avoid possible overheating and melting of the fuel rods. With this longer-term objective in mind, the predictive capabilities of a computational fluid dynamic two-fluid Eulerian-Eulerian model are tested against boiling flows of refrigerants in vertical channels. The model, solved within the STAR-CCM + code, combines a Reynolds stress turbulence model, the population balance based Sγ model and a wall boiling model. Generally, the model is demonstrated to predict these flows with a satisfactory accuracy, including the void distribution, although such agreement relies on model tuning for the particular cases of interest. In terms of future developments, a better wall function specific to boiling flows, more general and accurate models of bubble break-up and coalescence, and a more mechanistic formulation of the boiling model, are all identified as areas needing further improvements.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | computational fluid dynamics; boiling; two-fluid model |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 26 Jan 2017 10:35 |
Last Modified: | 31 Jan 2017 09:57 |
Published Version: | https://doi.org/10.1016/B978-0-444-63428-3.50079-5 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/B978-0-444-63428-3.50079-5 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:111183 |