Heat transfer from a moving fluid sphere with internal heat generation

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creativework.keywordsFluid sphere, Heat generation, Heat transfer, Viscosity ratio
creativework.publisherSerbian Society of Heat Transfer Engineersen
dc.contributor.authorAlexandrova S.
dc.contributor.authorKarsheva M.
dc.contributor.authorSaboni A.
dc.contributor.authorGourdon C.
dc.date.accessioned2024-07-10T14:27:03Z
dc.date.accessioned2024-07-10T14:48:06Z
dc.date.available2024-07-10T14:27:03Z
dc.date.available2024-07-10T14:48:06Z
dc.date.issued2014-01-01
dc.description.abstractIn this work, we solve numerically the unsteady conduction-convection equation including heat generation inside a fluid sphere. The results of a numerical study in which the Nusselt numbers from a spherical fluid volume were computed for different ranges of Reynolds number (0 < Re < 100), Peclet number (0 < Pe < 10000) and viscosity ratio (0 < κ < 10), are presented. For a circulating drop with Re → 0, steady creeping flow is assumed around and inside the sphere. In this case, the average temperatures computed from our numerical analysis are compared with those from literature and a very good agreement is found. For higher Reynolds number (0 < Re < 100), the Navier-Stokes equations are solved inside and outside the fluid sphere as well as the unsteady conduction-convection equation including heat generation inside the fluid sphere. It is proved that the viscosity ratio κ (κ = = μd/μc) influences significantly the heat transfer from the sphere. The average Nusselt number decreases with increasing κ for a fixed Peclet number and a given Reynolds number. It is also observed that the average Nusselt number is increasing as Peclet number increases for a fixed Re and a fixed κ.
dc.identifier.doi10.2298/TSCI120811054A
dc.identifier.issn0354-9836
dc.identifier.scopusSCOPUS_ID:84916941909en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/323
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84916941909&origin=inward
dc.titleHeat transfer from a moving fluid sphere with internal heat generation
dc.typeArticle
oaire.citation.issue4
oaire.citation.volume18
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