Hydrothermal Investigation of the Performance of Microchannel Heat Sink with Ribs Employed on Side Walls

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dc.authoridKhan, Amjid/0000-0003-3394-6655
dc.authoridCheema, Taqi Ahmad/0000-0002-2587-6602
dc.authoridAhmad, Faraz/0000-0003-4744-498X
dc.contributor.authorAhmad, Faraz
dc.contributor.authorCheema, Taqi Ahmad
dc.contributor.authorKhan, Amjid
dc.contributor.authorMohib-Ur-Rehman, Muhammad
dc.contributor.authorYildizhan, Hasan
dc.date.accessioned2025-01-06T17:44:21Z
dc.date.available2025-01-06T17:44:21Z
dc.date.issued2021
dc.description.abstractIn the present study, conjugate heat transfer and fluid flow performance of microchannel heat sink has been investigated using dimensionless parameters. Novel ribs of four different types are introduced on the side walls of channel, which include trapezoidal ribs, rectangular ribs, hydrofoil ribs, and elliptical ribs. The performance evaluation has been conducted by comparing friction factor (f), Nusselt number (Nu), fluid bulk temperature (T-f), wall shear stress (tau), field synergy number (Fc), irreversible heat loss (Q(d)), and Bejan number (Be) in a Reynolds number, ranging from Re = 100 to Re = 1000. The results revealed that the addition of these novel ribs are helpful in improving the overall thermal and hydraulic performance of microchannel heat sink. From the results of Bejan number, it has been revealed that more than 96 % of losses are because of heat transfer. However, at low Reynolds number, the frictional losses can be neglected, because of very low fluid velocity. Moreover, it has been revealed that synergetic relation between velocity and temperature gradient becomes weaker at higher Reynolds number. Furthermore, it is clear from this study that elliptical ribs performed better in thermal aspects, whereas hydrofoil ribs performed better at hydrodynamic aspects.
dc.description.sponsorshipInterdisciplinary Engineering, Modelling and Simulation Research Group (IEMSRG) of Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, KPK, Pakistan
dc.description.sponsorshipThe authors acknowledge the support of Interdisciplinary Engineering, Modelling and Simulation Research Group (IEMSRG) of Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, 23460, KPK, Pakistan. Moreover, the authors acknowledge the support of Air University, Islamabad for providing computational facility for this research.
dc.identifier.doi10.1515/jnet-2020-0104
dc.identifier.endpage272
dc.identifier.issn0340-0204
dc.identifier.issn1437-4358
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85103619853
dc.identifier.scopusqualityQ1
dc.identifier.startpage255
dc.identifier.urihttps://doi.org/10.1515/jnet-2020-0104
dc.identifier.urihttps://hdl.handle.net/20.500.14669/3020
dc.identifier.volume46
dc.identifier.wosWOS:000684177200003
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWalter De Gruyter Gmbh
dc.relation.ispartofJournal of Non-Equilibrium Thermodynamics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectside wall ribs
dc.subjectwall shear stress
dc.subjectNusselt number
dc.subjectfield synergy
dc.subjectBejan number
dc.titleHydrothermal Investigation of the Performance of Microchannel Heat Sink with Ribs Employed on Side Walls
dc.typeArticle

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