Please use this identifier to cite or link to this item: http://hdl.handle.net/11189/3298
Title: Inherent irreversibility and thermal stability for steady flow of variable viscosity liquid film in a cylindrical pipe with convective cooling at the surface
Authors: Makinde, Oluwole D
Maserumule, M.
Keywords: Heat transfer;Viscosity;Liquid flow;Thermal stability;Convection;Coding
Issue Date: 2010
Publisher: Emerald
Source: Makinde, O.D. & Maserumule, M. (2010). Inherent irreversibility and thermal stability for steady flow of variable viscosity liquid film in a cylindrical pipe with convective cooling at the surface. International Journal of Numerical Methods for Heat and Fluid Flow, 20(1): 5-16
Abstract: Purpose – The purpose of this paper is to investigate the inherent irreversibility and thermal stability in the flow of a variable viscosity fluid through a cylindrical pipe with convective cooling at the surface. Design/methodology/approach – The non-linear momentum and energy equations governing the flow are solved analytically using a perturbation method coupled with a special type of Hermite-Pade´ approximation technique implemented numerically on MAPLE. Findings – Expressions for dimensionless velocity and temperature, thermal criticality conditions and entropy generation number are obtained. A decrease in the fluid viscosity enhances both entropy generation rate and the dominant effect of heat transfer irreversibility near the wall Originality/value – This paper presents the application of the second law of thermodynamics and a special type of Hermite-Pade´ approximation technique to variable viscosity cylindrical pipe flow with convective cooling at the wall.
URI: http://hdl.handle.net/11189/3298
http://dx.doi.org/10.1108/09615531011008091
© 2010 Emerald
ISSN: 0961-5539
Appears in Collections:Eng - Journal articles (DHET subsidised)

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