Experimental and numerical study on ferrohydrodynamic and magneto-convection of Fe3O4/water ferrofluid in a sudden expansion tube with dimpled fins

Basit Öğe Kaydı
dc.contributor.authorGuersoy, Emrehan
dc.contributor.authorGurdal, Mehmet
dc.contributor.authorGedik, Engin
dc.contributor.authorArslan, Kamil
dc.contributor.authorDagdeviren, Abdullah
dc.date.accessioned2024-09-29T15:57:47Z
dc.date.available2024-09-29T15:57:47Z
dc.date.issued2024
dc.departmentKarabük Üniversitesien_US
dc.description.abstractBackground: This study experimentally and numerically addresses magnetohydrodynamic forced convection including dimpled fins, Fe3O4/water ferrofluid, and DC magnetic field. In this research, focusing on the thermohydraulic performance improvement of a sudden expansion tube. It has been used different inlet diameters, dimple sizes, ferro nanoparticle concentrations, and magnetic field strengths to examine the heat transfer and fluid dynamics characteristics of the system. Methods: The study consists of two parts, i) experimental and ii) numerical. Steady-state, incompressible, Newtonian flow were considered but chemical reaction, viscous dissipation, buoyancy, and radiative heat transfer were neglected in this study. On the other hand, numerical solutions were carried out for single-phase method. This study was first compared with the studies in the literature on the flow in a sudden expansion tube without dimpled fins and the error rate was found to be less than 10%. In the analysis, dimpled fins with d=3, 5, and 7 mm at each P=15 mm (P/d=5.0, 3.0, and 2.14) have been used. As working fluid, Fe3O4/water ferrofluid with volume concentration of phi=1.0 % and 2.0% have been analyzed. Additionally, DC magnetic fields, which strength of Ha=0.1, 0.3, 0.5, 1.1, 3.2, and 5.3 (B =0.01, 0.03, 0.05, 0.1, 0.3, and 0.5T), have been applied on the sudden expansion tube surface as external force. Significant findings: Dimpled fins enhance the heat transfer by disrupting the boundary layer and forming secondary flows, while the ferrofluid increases the thermal conductivity and viscosity of the base fluid. Based on these explanations, dimpled fins increased the convective heat transfer rate at the rate of 96.0% compared with smooth tube. In addition, Fe3O4/water ferrofluid with phi=2.0 % performed the highest performance and performance evaluation criteria increased by 8.5%. The magnetic field also contributes to the heat transfer enhancement by inducing Lorentz force and mixing the flow. Excessive increasing of magnetic field strength adversely affected the system performance, and the highest performance evaluation criterion is acquired at Ha=3.2 by increasing 3.9%. Compared with smooth tube, compound effect of dimpled fins, Fe3O4/water ferrofluid, and magnetic field improved the average Nusselt number and performance evaluation criterion at the rate of 279.8 % and 207.9%, respectively.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkiye (TUBITAK) [BIDEB-2211/C]; Karabuk University [KBU-BAP-DR-044]en_US
dc.description.sponsorshipEmrehan GUERSOY would like to thank the Scientific and Technological Research Council of Turkiye (TUBITAK) for providing financial support for this study under the BIDEB-2211/C fellowship project. In addition, this project was supported with the application number KBU-BAP-DR-044 within the scope of the Scientific Research Project, and all authors would like to thank Karabuk University for their support.en_US
dc.identifier.doi10.1016/j.jtice.2024.105676
dc.identifier.issn1876-1070
dc.identifier.issn1876-1089
dc.identifier.scopus2-s2.0-85200255917en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.jtice.2024.105676
dc.identifier.urihttps://hdl.handle.net/20.500.14619/5017
dc.identifier.volume164en_US
dc.identifier.wosWOS:001287398300001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofJournal of the Taiwan Institute of Chemical Engineersen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFerrofluiden_US
dc.subjectNanofluiden_US
dc.subjectMagnetic fielden_US
dc.subjectSudden expansion tubeen_US
dc.subjectHeat convectionen_US
dc.subjectDimpled finen_US
dc.titleExperimental and numerical study on ferrohydrodynamic and magneto-convection of Fe3O4/water ferrofluid in a sudden expansion tube with dimpled finsen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu