Pressure Drop and Heat Transfer Characteristics in a Microchannel with Pin-Fins

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dc.contributor.authorGönül, Alişan
dc.contributor.authorKarayiannis, Tassos G.
dc.date.accessioned2024-12-24T19:10:20Z
dc.date.available2024-12-24T19:10:20Z
dc.date.issued2024
dc.departmentSiirt Üniversitesi
dc.description.abstractPin-fin heat sinks are now considered one of the possible solutions for the thermal management of small-scale devices requiring high heat dissipation rates. Pin-fins with fixed diameters, different heights and spacing were numerically investigated in the current study for a range of Re=200-1000. The micro-channel cross-section with pins at the bottom surface measures 55 mm in length and has a cross-sectional area of 1 mm x 1 mm. The fin height ranges from 0.2 to 0.8 mm and the distance between pin-fins ranges from 3-6 mm. The fins had a circular cross section 0.25 mm in diameter. The Box-Behknen method was used to determine the number of numerical runs based on the parametric range of pin height and spacing and the Re number. Input data and corresponding outputs were presented using the Genetic Aggregation Response Surface Methodology. An optimum pin height and spacing in terms of heat transfer rates was obtained. It has been observed that at the optimum design, considering the highest Performance Evaluation Criteria (PEC) value the microchannel with pin-fins, can provide an enhancement of 364% in heat transfer rates compared to the microchannel without pins, while the corresponding increase in pressure drop reaches up to 162%. Correlations are proposed for heat transfer and pressure drop calculations able to predict the numerical results mostly within 10%. © 2024 Authors.
dc.description.sponsorshipTürkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTAK; Brunel University London, BUL; Engineering and Physical Sciences Research Council, EPSRC, (EP/T033045)
dc.identifier.doi10.11159/jffhmt.2024.019
dc.identifier.endpage196
dc.identifier.issn2368-6111
dc.identifier.scopus2-s2.0-85201690747
dc.identifier.scopusqualityQ3
dc.identifier.startpage187
dc.identifier.urihttps://doi.org10.11159/jffhmt.2024.019
dc.identifier.urihttps://hdl.handle.net/20.500.12604/4042
dc.identifier.volume11
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAvestia Publishing
dc.relation.ispartofJournal of Fluid Flow, Heat and Mass Transfer
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241222
dc.subjectgenetic algorithm
dc.subjectheat transfer enhancement
dc.subjectMicrochannel
dc.subjectpin-fin
dc.subjectresponse surface methodology
dc.titlePressure Drop and Heat Transfer Characteristics in a Microchannel with Pin-Fins
dc.typeArticle

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