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dc.contributor.authorRodríguez Pérez, Ivette María
dc.contributor.authorLehmkuhl Barba, Oriol
dc.contributor.authorSoria Guerrero, Manel
dc.contributor.authorGómez, Samuel
dc.contributor.authorDomínguez Pumar, Manuel
dc.contributor.authorKowalski, Lukasz
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.contributor.otherBarcelona Supercomputing Center
dc.identifier.citationRodriguez, I., Lehmkuhl, O., Soria, M., Gómez, S., Dominguez, M., Kowalski, L. On the boundary layer development and heat transfer from a sphere at moderate Reynolds numbers. A: International Conference on Computational Fluid Dynamics. "ICCFD10 Proceedings". 2018, p. 1-14.
dc.description.abstractDirect and large-eddy numerical simulations have been performed for a heated sphere at Reynolds numbers 200, 300, 500, 750, 1000 and 104, in the context of the development of a spherical wind sensor for Mars atmosphere intended for missions after Rover 2020. A lowdissipation ¿nite element scheme implemented in the multi-physics code Alya has been used to do so. The main heat transfer and aerodynamic parameters are presented, followed by detailed analysis of the wake and boundary layer development and the local heat transfer coe¿cients. Viscous and thermal boundary layer thicknesses decrease with the Reynolds number, the thermal one being thicker than the viscous layer. However, in all cases shape factor is the same in the zone with the favourable pressure gradient. The local Nusselt number is found to be asymmetric in the rear zone of the sphere for the laminar cases and recover its statistical symmetry once the wake transition to turbulent ¿ow. It is also found that the stagnation Nusselt number scales as Re0.47, in fair agreement with previous studies.
dc.format.extent14 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
dc.subjectÀrees temàtiques de la UPC::Física::Termodinàmica
dc.subject.lcshEddies--Mathematical models
dc.subject.lcshHeat--Transmission--Computer simulation
dc.subject.lcshFluid mechanics--Computer simulation
dc.subject.otherViscous and thermal boundary layer
dc.titleOn the boundary layer development and heat transfer from a sphere at moderate Reynolds numbers
dc.typeConference report
dc.subject.lemacRemolins (Mecànica de fluids) -- Models matemàtics
dc.subject.lemacCalor -- Transmissió -- Simulació numèrica
dc.subject.lemacMecànica de fluids -- Simulació per ordinador
dc.contributor.groupUniversitat Politècnica de Catalunya. TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group
dc.contributor.groupUniversitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorRodriguez, I.; Lehmkuhl, O.; Soria, M.; Gómez, S.; Dominguez, M.; Kowalski, L.
local.citation.contributorInternational Conference on Computational Fluid Dynamics
local.citation.publicationNameICCFD10 Proceedings

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