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Analysis of thermal-hydraulic performance and flow structures of nanofluids across various corrugated channels: An experimental and numerical study

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dc.citedby19
dc.contributor.authorAjeel R.K.en_US
dc.contributor.authorSaiful-Islam W.en_US
dc.contributor.authorSopian K.en_US
dc.contributor.authorYusoff M.Z.en_US
dc.contributor.authorid57197706271en_US
dc.contributor.authorid57217194805en_US
dc.contributor.authorid7003375391en_US
dc.contributor.authorid7003976733en_US
dc.date.accessioned2023-05-29T08:07:25Z
dc.date.available2023-05-29T08:07:25Z
dc.date.issued2020
dc.descriptionAlumina; Aluminum oxide; Channel flow; Flow structure; Heat flux; Heat transfer performance; Kinetic energy; Kinetics; Reynolds number; Silica; Volume fraction; Empirical correlations; Experimental and numerical studies; Heat transfer and pressure drop; Heat-transfer ratios; Heating and cooling systems; Thermal-hydraulic performance; Turbulent kinetic energy; Turbulent viscosity; Nanofluidicsen_US
dc.description.abstractThe combination of nanofluid and corrugated surface is regarded as a very cost-efficient strategy for providing high heat transfer performance between the target surface and working fluid in different heating and cooling system applications. Herein a comparison study is reported on the thermal performance of different corrugated channels using nanofluids under turbulent flow and constant heat flux conditions. Three shapes, namely, semicircle corrugated channel (SCC), trapezoidal corrugated channel (TCC), and straight channel (SC) are fabricated and tested with 1% and 2% volume fraction of SiO2-water and Al2O3-water nanofluids. Nanoparticles with a size of 20 nm dispersed in water with specific volume fractions are used for comparison and evaluation. The numerical simulations present the flow structures of nanofluids in terms of velocity, isotherms, turbulent viscosity, vorticity and turbulent kinetic energy contours. The findings show that the heat transfer and pressure drop increase as volume fractions of nanofluids and Reynolds number increase. The experiments also revealed that the use of modified channels significantly increases the heat transfer ratio and the greatest enhancement ratio was achieved through the use of a trapezoidal corrugated channel with ?=2% of silica nanofluid. Over ranges of considered flow, silica nanofluid was better than alumina nanofluid and the best thermal performance of 1.94 was recorded using silica nanofluid at ?=2% and TCC at Reynolds number of 10000. Additionally, new empirical correlations were proposed and reported based on experimental data. � 2020en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo100604
dc.identifier.doi10.1016/j.tsep.2020.100604
dc.identifier.scopus2-s2.0-85086707260
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85086707260&doi=10.1016%2fj.tsep.2020.100604&partnerID=40&md5=104e68e34c8d99035491470f2bbb3641
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/25221
dc.identifier.volume19
dc.publisherElsevier Ltden_US
dc.sourceScopus
dc.sourcetitleThermal Science and Engineering Progress
dc.titleAnalysis of thermal-hydraulic performance and flow structures of nanofluids across various corrugated channels: An experimental and numerical studyen_US
dc.typeArticleen_US
dspace.entity.typePublication
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