Numerical Investigation of Combined Convective Heat Transfer Using Fractal Barriers in a Circular Cavity Filled With Nanofluid

dc.authorscopusid59460575600
dc.authorscopusid59375113300
dc.authorscopusid56765655800
dc.authorscopusid57004432700
dc.authorscopusid23028598900
dc.authorscopusid57449950600
dc.contributor.authorMougouei, Reza
dc.contributor.authorAli, Ali B. M.
dc.contributor.authorAkbari, Omid Ali
dc.contributor.authorAhmadi, Gholamreza
dc.contributor.authorSalahshour, Soheil
dc.contributor.authorBaghaei, Sh
dc.date.accessioned2024-12-15T15:41:33Z
dc.date.available2024-12-15T15:41:33Z
dc.date.issued2025
dc.departmentOkan Universityen_US
dc.department-temp[Mougouei, Reza] Isfahan Univ Technol, Golpayegan Coll Engn, Dept Mech Engn, Golpayegan 8771767498, Iran; [Ali, Ali B. M.] Univ Warith Al Anbiyaa, Coll Engn, Air Conditioning Engn Dept, Karbala, Iraq; [Akbari, Omid Ali] Arak Univ, Fac Engn, Dept Mech Engn, Arak 3815688349, Iran; [Ahmadi, Gholamreza] Shahid Beheshti Univ, Fac Mech & Energy Engn, Tehran, Iran; [Salahshour, Soheil] Istanbul Okan Univ, Fac Engn & Nat Sci, Istanbul, Turkiye; [Salahshour, Soheil] Bahcesehir Univ, Fac Engn & Nat Sci, Istanbul, Turkiye; [Salahshour, Soheil] Piri Reis Univ, Fac Sci & Letters, Tuzla, Istanbul, Turkiye; [Baghaei, Sh] Islamic Azad Univ, Dept Engn, Tehran, Iranen_US
dc.description.abstractIn the present research, the numerical investigation of the nanofluid flow inside the circular cavity with the presence of fractal barriers has been done using the finite volume method (FVM). This investigation is done for Richardson numbers (Ri) = 0.1 to 1, solid nanoparticle volume fraction (phi) = 0 to 0.6 and for three shapes of fractal barrier in the two-dimensional (2D) cavity. The results of this research show that the presence of an obstacle with a special shape causes the components of the flow paths, creates weaker vortices in parts of the cavity and finally increases the contact of the fluid with hot surfaces. The behavior of the flow lines in the cavity is affected by two main stimulating factors. The main factor in the movement of the flow is the mobility of the cap (lid-driven), which, as a result, due to the viscosity of the fluid, the layered transfer of movement continues to the lower layers of the fluid. This factor forces the flow field to move. An increase in Ri increases the speed of the cap, which will result in better heat penetration and mixing between the fluid layers in different parts of the cavity. If this is accompanied by an increase in the disturbance of the flow due to the presence of obstacles, it will have a greater effect on the uniform temperature distribution. It seems that in addition to the forced convection, the conduction mechanism will also play a significant role in heat distribution. Adding solid nanoparticles in a higher phi, this behavior makes the heat distribution uniform to a small extent. Moreover, changing the shape of the fractal barrier will cause changes in fluid circulation behavior and reduce the slope of constant temperature lines. The thermal conductivity of the fluid will also improve through the addition of solid nanoparticles and consequently, the local Nusselt number (Nu) increases. Changes in the average Nusselt number at Ri = 0.1 in different volume fractions and for the cases studied can cause an increase in the Nusselt number between 10 and 16 percent. The above behavior for Ri = 1 improves the Nusselt number by less than 13 percent and for Ri = 10 this is less than 4 percent.en_US
dc.description.woscitationindexScience Citation Index Expanded
dc.identifier.citationcount0
dc.identifier.doi10.1016/j.csite.2024.105614
dc.identifier.issn2214-157X
dc.identifier.scopus2-s2.0-85211157090
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.csite.2024.105614
dc.identifier.volume65en_US
dc.identifier.wosWOS:001441980500001
dc.identifier.wosqualityQ1
dc.institutionauthorSalahshour, Soheıl
dc.institutionauthorSalahshour, Soheıl
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.scopus.citedbyCount1
dc.subjectCircular Cavityen_US
dc.subjectHeat Transferen_US
dc.subjectNumerical Studyen_US
dc.subjectNanofluiden_US
dc.subjectNusselt Numberen_US
dc.subjectFractal Barriersen_US
dc.titleNumerical Investigation of Combined Convective Heat Transfer Using Fractal Barriers in a Circular Cavity Filled With Nanofluiden_US
dc.typeArticleen_US
dspace.entity.typePublication
relation.isAuthorOfPublicationf5ba517c-75fb-4260-af62-01c5f5912f3d
relation.isAuthorOfPublication.latestForDiscoveryf5ba517c-75fb-4260-af62-01c5f5912f3d

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