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On the relation between Nusselt and Péclet number in high Péclet number convective heat transfer

Lohöfer, Georg (2016) On the relation between Nusselt and Péclet number in high Péclet number convective heat transfer. International Journal of Thermal Sciences, 109, pp. 201-205. Elsevier. ISSN 1290-0729 (In Press)

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Abstract

For the steady forced convection cooling of an isothermal spherical object in an axially symmetric incompressible fluid flow at high Péclet numbers, where the heat transport occurs mainly in a thin thermal boundary layer near the surface of the object, the relation: Nu~Pe^1/2 or Nu~Pe^1/3 between the Nusselt number and the Péclet number is generally found. In this paper we investigate for the general case of a 3-dimensional object immersed in a 3-d incompressible fluid flow the connection between these two characteristic numbers and obtain a similar relation: Nu~Pe^1/(k+2) with integer values k>=0 depending only on the boundary conditions of the fluid flow field at the surface of the object.

Item URL in elib:https://elib.dlr.de/104682/
Document Type:Article
Title:On the relation between Nusselt and Péclet number in high Péclet number convective heat transfer
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lohöfer, Georggeorg.lohoefer (at) dlr.deUNSPECIFIED
Date:November 2016
Journal or Publication Title:International Journal of Thermal Sciences
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:109
Page Range:pp. 201-205
Publisher:Elsevier
ISSN:1290-0729
Status:In Press
Keywords:Convective heat transfer; 3-dimensional; Incompressible fluid flow; Thermal boundary layer; Nusselt number; Péclet number
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Materialforschung unter Mikro-g (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Lohöfer, Georg
Deposited On:20 Jun 2016 07:07
Last Modified:30 May 2019 22:05

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