Publication:
The effect of nanofluids flow on mixed convection heat transfer over microscale backward-facing step

Simple item page
dc.citedby75
dc.contributor.authorKherbeet A.Sh.en_US
dc.contributor.authorMohammed H.A.en_US
dc.contributor.authorSalman B.H.en_US
dc.contributor.authorid55260597800en_US
dc.contributor.authorid15837504600en_US
dc.contributor.authorid48461700800en_US
dc.date.accessioned2023-12-28T06:30:12Z
dc.date.available2023-12-28T06:30:12Z
dc.date.issued2012
dc.description.abstractLaminar mixed convection flow over a 2D horizontal microscale backward-facing step (MBFS) placed in a duct is numerically investigated. The governing equations along with the boundary conditions are solved using the finite volume method (FVM). The upstream wall and the step wall are considered adiabatic, while the downstream wall is heated by uniform heat flux. The straight wall of the duct is maintained at a constant temperature that is higher than the inlet fluid temperature. Different types of nanoparticles such as Al 2O 3, CuO, SiO 2 and ZnO, with volume fractions in the range of 1-4% are used. The nanoparticles diameter was in the range of 25 nm ? d p ? 70 nm. The expansion ratio was 2 and the step height was 0.96 ?m. The Reynolds number was in the range of 0.05 ? Re ? 0.5. The results revealed that the Nusselt number increases with increasing the volume fraction and Reynolds number. The nanofluid of SiO 2 nanoparticles is observed to have the highest Nusselt number value. It is also found that the Nusselt number increases with the decrease of nanoparticle diameter. However, there is no recirculation region was observed at the step and along the duct. � 2012 Elsevier Ltd. All rights reserved.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1016/j.ijheatmasstransfer.2012.05.084
dc.identifier.epage5881
dc.identifier.issue21-22
dc.identifier.scopus2-s2.0-84864288439
dc.identifier.spage5870
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84864288439&doi=10.1016%2fj.ijheatmasstransfer.2012.05.084&partnerID=40&md5=24697fd207f7297488cad74b4eb92bea
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/29484
dc.identifier.volume55
dc.pagecount11
dc.sourceScopus
dc.sourcetitleInternational Journal of Heat and Mass Transfer
dc.subjectHeat transfer enhancement
dc.subjectMicroscale backward-facing step
dc.subjectMixed convection
dc.subjectNanofluids
dc.subjectDucts
dc.subjectFinite volume method
dc.subjectHeat flux
dc.subjectMixed convection
dc.subjectNanoparticles
dc.subjectNusselt number
dc.subjectReynolds number
dc.subjectZinc oxide
dc.subjectBackward facing step
dc.subjectConstant temperature
dc.subjectExpansion ratio
dc.subjectFluid temperatures
dc.subjectGoverning equations
dc.subjectHeat Transfer enhancement
dc.subjectMicro-scales
dc.subjectMixed convection flow
dc.subjectNanofluids
dc.subjectNanoparticle diameter
dc.subjectRecirculation regions
dc.subjectStep height
dc.subjectUniform heat flux
dc.subjectZnO
dc.subjectNanofluidics
dc.titleThe effect of nanofluids flow on mixed convection heat transfer over microscale backward-facing stepen_US
dc.typeArticleen_US
dspace.entity.typePublication
Files
Collections
SCOPUS