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Numerical investigation of combined convection and nanofluids flow over backward facing step in a channel having a blockage

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dc.citedby1
dc.contributor.authorMohammed H.A.en_US
dc.contributor.authorGolieskardi M.en_US
dc.contributor.authorMunisamy K.M.en_US
dc.contributor.authorid15837504600en_US
dc.contributor.authorid55866907000en_US
dc.contributor.authorid15035918600en_US
dc.date.accessioned2023-05-16T02:45:57Z
dc.date.available2023-05-16T02:45:57Z
dc.date.issued2014
dc.description.abstractThe effects of two dimensional laminar and turbulent combined convection nanofluids flows over backward facing step in a channel having a blockage are numerically investigated. The continuity, momentum and energy equations are solved using finite volume method (FVM) with the SIMPLE algorithm scheme. The duct has a step height of 0.01, and an expansion ratio of 2. The Reynolds number was in the range of 100-1900 (laminar flow) and in the range of 4000-10000 (turbulent flow). The effect of the blockage shape (circular, square and triangular) on the flow and heat transfer characteristics is examined. The effects of various types of nanoparticles such as Al2O3, SiO2, CuO, and ZnO dispersed in a base fluid (water), volume fraction of nanoparticles in the range of 1% to 4% and nanoparticle diameter in the range of 25 nm to 80 nm are also studied. It is inferred that the circular blockage has the highest Nusselt number compared to other two shapes. The reattachment point is found to move downstream far from the step as Reynolds number increases. Nanofluid of SiO2 is observed to have the highest Nusselt number and skin friction coefficient among other nanofluids types, while nanofluid of CuO nanoparticles has the lowest Nusselt number and skin friction coefficient. © 2014 American Scientific Publishers All rights reserved.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1166/jctn.2014.3452
dc.identifier.epage980
dc.identifier.issue4
dc.identifier.scopus2-s2.0-84894648394
dc.identifier.spage971
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84894648394&doi=10.1166%2fjctn.2014.3452&partnerID=40&md5=6f3a06851647e5683d3db57c89b879c6
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/21900
dc.identifier.volume11
dc.sourceScopus
dc.sourcetitleJournal of Computational and Theoretical Nanoscience
dc.titleNumerical investigation of combined convection and nanofluids flow over backward facing step in a channel having a blockageen_US
dc.typeArticleen_US
dspace.entity.typePublication
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