Interaction between multiple bubbles in microchannel flow boiling and the effects on heat transfer
| dc.contributor.author | Lombaard, Louis | |
| dc.contributor.author | Moghimi, M.A. | |
| dc.contributor.author | Valluri, P. | |
| dc.contributor.author | Meyer, Josua P. | |
| dc.date.accessioned | 2022-11-01T05:07:58Z | |
| dc.date.issued | 2021-12 | |
| dc.description.abstract | Flow boiling in microchannels have widely been studied in order to design more efficient cooling systems with numerical simulations forming a crucial part to deal with the areas that cannot be investigated experimentally. Previously published research largely focussed on the behaviour of a single bubble. Here, we focus on the behaviour of multiple bubbles. In this study, the influence of the distance between the bubbles (liquid slug length) is investigated in both an axisymmetric and a planar domain for two and three bubbles present. In this regard, an interface-tracking adaptive mesh refinement model was implemented to improve simulation time. Results show that the heat transfer was improved with sequential bubbles, and a 50% increase in heat transfer coefficient was observed for the cases investigated with three bubbles present. The heat transfer also improved the closer the bubbles were together. | en_US |
| dc.description.department | Mechanical and Aeronautical Engineering | en_US |
| dc.description.embargo | 2023-10-22 | |
| dc.description.librarian | hj2022 | en_US |
| dc.description.sponsorship | ThermaSMART Project of the European Commission, the Edinburgh Compute & Data Facility (ECDF) and Centre for High Performance Computing (CHPC), South Africa. | en_US |
| dc.description.uri | https://www.elsevier.com/locate/ichmt | en_US |
| dc.identifier.citation | Lombaard, L., Moghimi, M.A., Valluri, P. & Meyer, J.P. 2021, 'Interaction between multiple bubbles in microchannel flow boiling and the effects on heat transfer', International Communications in Heat and Mass Transfer, vol. 129, art. 105703, pp. 1-17, doi : 10.1016/j.icheatmasstransfer.2021.105703. | en_US |
| dc.identifier.issn | 0735-1933 (print) | |
| dc.identifier.issn | 1879-0178 (online) | |
| dc.identifier.other | 10.1016/j.icheatmasstransfer.2021.105703 | |
| dc.identifier.uri | https://repository.up.ac.za/handle/2263/88032 | |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier | en_US |
| dc.rights | © 2021 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in International Communications in Heat and Mass Transfer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in International Communications in Heat and Mass Transfer, vol. 129, art. 105703, pp. 1-17 2021. doi : 10.1016/j.icheatmasstransfer.2021.105703. | en_US |
| dc.subject | Flow boiling | en_US |
| dc.subject | Microchannel multiple bubbles | en_US |
| dc.subject | Computational fluid dynamics (CFD) | en_US |
| dc.subject.other | Engineering, built environment and information technology articles SDG-04 | |
| dc.subject.other | SDG-04: Quality education | |
| dc.subject.other | Engineering, built environment and information technology articles SDG-07 | |
| dc.subject.other | SDG-07: Affordable and clean energy | |
| dc.subject.other | Engineering, built environment and information technology articles SDG-09 | |
| dc.subject.other | SDG-09: Industry, innovation and infrastructure | |
| dc.subject.other | Engineering, built environment and information technology articles SDG-12 | |
| dc.subject.other | SDG-12: Responsible consumption and production | |
| dc.title | Interaction between multiple bubbles in microchannel flow boiling and the effects on heat transfer | en_US |
| dc.type | Postprint Article | en_US |