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Heat Transfer and Hydrodynamics of Slip Confusor Flow under Second-Order Boundary Conditions

  • The paper focused on an analytical analysis of the main features of heat transfer in incompressible steady-state flow in a microconfusor with account for the second-order slip boundary conditions. The second-order boundary conditions serve as a closure of a system of the continuity, transport, and energy differential equations. As a result, novel solutions were obtained for the velocity and temperature profiles, as well as for the friction coefficient and the Nusselt number. These solutions demonstrated that an increase in the Knudsen number leads to a decrease in the Nusselt number. It was shown that the account for the second-order terms in the boundary conditions noticeably affects the fluid flow characteristics and does not influence on the heat transfer characteristics. It was also revealed that flow slippage effects on heat transfer weaken with an increase in the Prandtl number.

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Metadaten
Author:Andriy Alexandr Avramenko, Nataliya P. Dmitrenko, Igor V. Shevchuk
URN:urn:nbn:de:hbz:832-epub4-22479
DOI:https://doi.org/10.1007/s10973-020-09517-x
ISSN:1388-6150
ISSN:1588-2926
Parent Title (English):Journal of Thermal Analysis and Calorimetry
Publisher:Springer International Publishing
Document Type:Article
Language:English
Date of first Publication:2021/05/01
Date of Publication (online):2023/06/16
GND-Keyword:Wärmeübertragung
Tag:Analytical Solution; Heat Transfer; Microchannel; Velocity Slip
Volume:144
Issue:3
Page Number:7
Institutes:Informatik und Ingenieurwissenschaften (F10) / Fakultät 10 / Institut Allgemeiner Maschinenbau
Dewey Decimal Classification:500 Naturwissenschaften und Mathematik
Open Access:Open Access
DeepGreen:DeepGreen
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International