Publication:
Heat transfer enhancement in a corrugated-trapezoidal channel using winglet vortex generators

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dc.citedby11
dc.contributor.authorNfawa S.R.en_US
dc.contributor.authorTalib A.R.A.en_US
dc.contributor.authorMasuri S.U.en_US
dc.contributor.authorBasri A.A.en_US
dc.contributor.authorHasini H.en_US
dc.contributor.authorid57204145914en_US
dc.contributor.authorid21741790100en_US
dc.contributor.authorid24437439900en_US
dc.contributor.authorid56572643700en_US
dc.contributor.authorid6507435998en_US
dc.date.accessioned2023-05-29T07:28:31Z
dc.date.available2023-05-29T07:28:31Z
dc.date.issued2019
dc.description.abstractIn this study, heat transfer rates and flow behavior of water inside corrugated channel with a new configuration of winglet longitudinal vortex-generators have been numerically carried out. In general, the main objective of using the winglet longitudinal vortex-generators with the corrugated surfaces is to obtain an increase in the rate of heat exchange by generating vortex and reverse flow which in turn increases the efficiency of the thermal process, leading to save operating costs. To achieve this purpose, four amplitude heights are introduced: a = 1, 2, 3 and 4 mm. Furthermore, the arrangement of winglet longitudinal vortex-generator is placed at the entrance of each wave existing with the same as the slant angle of the waves in the trapezoidal channel. A constant heat flux is adopted to be the thermal condition for the lower and upper corrugated walls while the Reynolds numbers (Re) rate is in the range of 5,000 to 17,500. The effects of the trapezoidal amplitude heights with winglets longitudinal vortex-generator are studied and compared using the non-dimensional parameter performance evaluation criteria (PEC). Thermal and flow characteristics are explored with the help of the stream wise velocity and isotherms contours for trapezoidal-corrugated channels with winglet inserts and different amplitudes. Nusselt number (Nu), skin friction coefficient and PEC are substantial factors that studied at turbulent flow. According to the results obtained, the winglet longitudinal in corrugated duct has showed a significant improvement of the Nu but accompanied by increased of skin friction coefficient over those of a plane duct. Consequently, winglet longitudinal vortex-generator with corrugated channel might be favorable in several heat transfer applications. � 2019 PENERBIT AKADEMIA BARU - All rights reserved.en_US
dc.description.natureFinalen_US
dc.identifier.epage80
dc.identifier.issue10
dc.identifier.scopus2-s2.0-85076444152
dc.identifier.spage69
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85076444152&partnerID=40&md5=ac551f233439df15a725546fff5d374c
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/24901
dc.identifier.volume11
dc.publisherPenerbit Akademia Baruen_US
dc.sourceScopus
dc.sourcetitleCFD Letters
dc.titleHeat transfer enhancement in a corrugated-trapezoidal channel using winglet vortex generatorsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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