Pulsating nanofluid flow in a wavy bifurcating channel under partially active uniform magnetic field effects

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dc.contributor.authorKolsi L.
dc.contributor.authorSelimefendigil F.
dc.contributor.authorGhachem K.
dc.contributor.authorAlqahtani T.
dc.contributor.authorAlgarni S.
dc.date.accessioned2024-07-22T08:04:49Z
dc.date.available2024-07-22T08:04:49Z
dc.date.issued2022
dc.description.abstractSeparated flow and thermal performance characteristics by combined utilization of surface corrugation, partially active magnetic field, nanoparticle loading in the base fluid and flow pulsations are analyzed numerically in a bifurcating channel by using finite element method. Size and number of vortices are affected by the variation corrugation height and wave numbers while the vortices are damped by using partially active magnetic field in different domains. When various methods are compared, by using corrugations highest heat transfer improvement is achieved followed by the flow pulsations and magnetic field. By utilization of nanofluids, thermal performance is further improved. When corrugation height is considered, enhancement up to 248.3% is obtained for wave number of 8 while variation in the average Nusselt number (Nu) becomes only 22.9% with varying wave number. The enhancement amount with pulsating flow amplitude depends upon the nanoparticle loading amount in the base fluid. At solid volume fraction of 0.02%, the average Nu increases by about 79.8% with pulsating flow at the highest amplitude as compared to steady flow case. Dynamic models with system identification are constructed for predictions of time dependent Nu variations for different pulsating amplitudes in the absence and presence of magnetic field for the bifurcating channel. The potential improvement of convective heat transfer in bifurcation channels is explored by combining different novel enhancement methods together. The results of the present analysis will be beneficial for performance improvement and optimization studies of bifurcating channel applications appeared in microelectromechanical systems, fuel cells and thermal management of diverse thermal systems. © 2022 Elsevier Ltd
dc.identifier.DOI-ID10.1016/j.icheatmasstransfer.2022.105938
dc.identifier.issn07351933
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/12861
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectBifurcation (mathematics)
dc.subjectElectromechanical devices
dc.subjectFuel cells
dc.subjectHeat convection
dc.subjectMEMS
dc.subjectNanofluidics
dc.subjectNanomagnetics
dc.subjectNanoparticles
dc.subjectVortex flow
dc.subjectBifurcating channel
dc.subjectCorrugation heights
dc.subjectFlow pulsation
dc.subjectMagnetic-field
dc.subjectNanofluids
dc.subjectNanoparticle loadings
dc.subjectPulsating flow
dc.subjectSystem-identification
dc.subjectThermal Performance
dc.subjectWave numbers
dc.subjectFinite element method
dc.titlePulsating nanofluid flow in a wavy bifurcating channel under partially active uniform magnetic field effects
dc.typeArticle

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