TY  - JOUR
AB  - 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‐Padé 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 wallOriginality/value– This paper presents the application of the second law of thermodynamics and a special type of Hermite‐Padé approximation technique to variable viscosity cylindrical pipe flow with convective cooling at the wall.
VL  - 20
IS  - 1
SN  - 0961-5539
DO  - 10.1108/09615531011008091
UR  - https://doi.org/10.1108/09615531011008091
AU  - Makinde O.D.
AU  - Maserumule M.
PY  - 2010
Y1  - 2010/01/01
TI  - Inherent irreversibility and thermal stability for steady flow of variable viscosity liquid film in a cylindrical pipe with convective cooling at the surface
T2  - International Journal of Numerical Methods for Heat & Fluid Flow
PB  - Emerald Group Publishing Limited
SP  - 5
EP  - 16
Y2  - 2024/04/25
ER  -