On the boundary layer development and heat transfer from a sphere at moderate Reynolds numbers
dc.contributor.author | Rodríguez Pérez, Ivette María |
dc.contributor.author | Lehmkuhl Barba, Oriol |
dc.contributor.author | Soria Guerrero, Manel |
dc.contributor.author | Gómez, Samuel |
dc.contributor.author | Domínguez Pumar, Manuel |
dc.contributor.author | Kowalski, Lukasz |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica |
dc.contributor.other | Barcelona Supercomputing Center |
dc.date.accessioned | 2018-07-19T07:16:55Z |
dc.date.issued | 2018 |
dc.identifier.citation | Rodriguez, 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.identifier.uri | http://hdl.handle.net/2117/119563 |
dc.description.abstract | Direct 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.extent | 14 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
dc.subject | Àrees temàtiques de la UPC::Física::Termodinàmica |
dc.subject.lcsh | Eddies--Mathematical models |
dc.subject.lcsh | Heat--Transmission--Computer simulation |
dc.subject.lcsh | Fluid mechanics--Computer simulation |
dc.subject.other | Wakes |
dc.subject.other | DNS |
dc.subject.other | LES |
dc.subject.other | Viscous and thermal boundary layer |
dc.title | On the boundary layer development and heat transfer from a sphere at moderate Reynolds numbers |
dc.type | Conference report |
dc.subject.lemac | Remolins (Mecànica de fluids) -- Models matemàtics |
dc.subject.lemac | Calor -- Transmissió -- Simulació numèrica |
dc.subject.lemac | Mecànica de fluids -- Simulació per ordinador |
dc.contributor.group | Universitat Politècnica de Catalunya. TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group |
dc.contributor.group | Universitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.iccfd.org/iccfd10/papers/ICCFD10-247-Paper.pdf |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 23266807 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Rodriguez, I.; Lehmkuhl, O.; Soria, M.; Gómez, S.; Dominguez, M.; Kowalski, L. |
local.citation.contributor | International Conference on Computational Fluid Dynamics |
local.citation.publicationName | ICCFD10 Proceedings |
local.citation.startingPage | 1 |
local.citation.endingPage | 14 |
Files in this item
This item appears in the following Collection(s)
All rights reserved. This work is protected by the corresponding intellectual and industrial
property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public
communication or transformation of this work are prohibited without permission of the copyright holder