Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/72575
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Gonçalves, Inês M. | por |
dc.contributor.author | Rocha, César | por |
dc.contributor.author | Souza, Reinaldo Rodrigues | por |
dc.contributor.author | Coutinho, Gonçalo | por |
dc.contributor.author | Pereira, Jose E. | por |
dc.contributor.author | Moita, Ana S. | por |
dc.contributor.author | Moreira, António L. N. | por |
dc.contributor.author | Lima, Rui Alberto Madeira Macedo | por |
dc.contributor.author | Miranda, João M. | por |
dc.date.accessioned | 2021-05-10T10:28:13Z | - |
dc.date.available | 2021-05-10T10:28:13Z | - |
dc.date.issued | 2021-03-09 | - |
dc.identifier.citation | Gonçalves, I.M.; Rocha, C.; Souza, R.R.; Coutinho, G.; Pereira, J.E.; Moita, A.S.; Moreira, A.L.N.; Lima, R.; Miranda, J.M. Numerical Optimization of a Microchannel Geometry for Nanofluid Flow and Heat Dissipation Assessment. Appl. Sci. 2021, 11, 2440. https://doi.org/10.3390/app11052440 | por |
dc.identifier.uri | https://hdl.handle.net/1822/72575 | - |
dc.description.abstract | In this study, a numerical approach was carried out to analyze the effects of different geometries of microchannel heat sinks on the forced convective heat transfer in single-phase flow. The simulations were performed using the commercially available software <i>COMSOLMultiphysics 5.6<sup>®</sup></i> (Burlington, MA, USA) and its results were compared with those obtained from experimental tests performed in microchannel heat sinks of polydimethylsiloxane (PDMS). Distilled water was used as the working fluid under the laminar fluid flow regime, with a maximum Reynolds number of 293. Three sets of geometries were investigated: rectangular, triangular and circular. The different configurations were characterized based on the flow orientation, type of collector and number of parallel channels. The main results show that the rectangular shaped collector was the one that led to a greater uniformity in the distribution of the heat transfer in the microchannels. Similar results were also obtained for the circular shape. For the triangular geometry, however, a disturbance in the jet impingement was observed, leading to the least uniformity. The increase in the number of channels also enhanced the uniformity of the flow distribution and, consequently, improved the heat transfer performance, which must be considered to optimize new microchannel heat sink designs. The achieved optimized design for a heat sink, with microchannels for nanofluid flow and a higher heat dissipation rate, comprised a rectangular collector with eight microchannels and vertical placement of the inlet and outlet. | por |
dc.description.sponsorship | This work has been funded by Portuguese national funds of FCT/MCTES (PIDDAC) through base funding from the following research units: UIDB/00532/2020 (Transport Phenomena Research Center-CEFT), UIDB/04077/2020 (MEtRICs) and UIDP/04436/2020. The authors are also grateful for the funding of Fundação para a Ciência e a Tecnologia-FCT through the projectsLISBOA-01-0145-FEDER-030171/NORTE-01-0145-FEDER-030171 (PTDC/EMESIS/30171/2017), funded by COMPETE2020, NORTE2020, PORTUGAL2020, and FEDER. The authors also acknowledge FCT for partially financing the research under the framework of the project JICAM/0003/2017. Finally, I. Gonçalves acknowledges FCT for supporting her PhD fellowship, ref.: 2020.08646.BD | por |
dc.language.iso | eng | por |
dc.publisher | Multidisciplinary Digital Publishing Institute (MDPI) | por |
dc.relation | UIDB/00532/2020 | por |
dc.relation | UIDB/04077/2020 | por |
dc.relation | UIDP/04436/2020 | por |
dc.relation | PTDC/EMESIS/30171/2017 | por |
dc.relation | JICAM/0003/2017 | por |
dc.rights | openAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | Heat transfer | por |
dc.subject | Microchannel heat sinks | por |
dc.subject | Flow geometries | por |
dc.subject | Nanofluids | por |
dc.subject | Numerical study | por |
dc.title | Numerical optimization of a microchannel geometry for nanofluid flow and heat dissipation assessment | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://www.mdpi.com/2076-3417/11/5/2440 | por |
oaire.citationStartPage | 1 | por |
oaire.citationEndPage | 22 | por |
oaire.citationIssue | 5 | por |
oaire.citationVolume | 11 | por |
dc.date.updated | 2021-03-12T14:38:48Z | - |
dc.identifier.eissn | 2076-3417 | - |
dc.identifier.doi | 10.3390/app11052440 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Applied Sciences | por |
oaire.version | VoR | por |
Aparece nas coleções: | MEtRICs - Artigos em revistas internacionais/Papers in international journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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applsci-11-02440-v3.pdf | 8,54 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons