Second Law Analysis of a non-Newtonian Laminar Falling Liquid Film Along an Inclined Heated Plate

The second law analysis of heat transfer of a non-Newtonian, laminar fallingliquid film along an inclined heated plate is investigated. The upper surface of the liquidfilm is considered free and adiabatic. Velocity and temperature profiles are obtainedanalytically and used to compute the entropy gen...

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Bibliographic Details
Main Authors: David M. Pratt, Rama Subba Reddy Gorla
Format: Article
Language:English
Published: MDPI AG 2007-03-01
Series:Entropy
Subjects:
Online Access:http://www.mdpi.com/1099-4300/9/1/30/
Description
Summary:The second law analysis of heat transfer of a non-Newtonian, laminar fallingliquid film along an inclined heated plate is investigated. The upper surface of the liquidfilm is considered free and adiabatic. Velocity and temperature profiles are obtainedanalytically and used to compute the entropy generation number (Ns), irreversibility ratio (Φ) and the Bejan number (Be) for several values of the viscous dissipation parameter(Br -1), viscosity index (n) and the dimensionless axial distance (X). The Bejan numberincreases in the transverse direction and decreases as the viscous dissipation parameter(BrΩ -1) increases. The numerical results show that the Bejan number decreases as theviscous dissipation parameter (BrΩ -1), Peclet number (Pe) and the viscosity index (n)increase.
ISSN:1099-4300