Title: Entropy generation analysis for Couette–Poiseuille flow through parallel-plates microchannel

Authors: Mortaza Yari

Addresses: Faculty of Engineering, Department of Mechanical Engineering, University of Mohaghegh Ardabili, Ardabil 179, Iran

Abstract: This paper presents the first and second laws of thermodynamics analysis for laminar forced convective heat transfer of a Newtonian fluid in a microchannel between parallel plates. Hydrodynamically and thermally fully developed flow with constant properties is examined. Two different forms of the thermal boundary-conditions are considered. The velocity and temperature profiles are analytically determined as a function of the Brinkman and the Knudsen number. The present results are in an excellent agreement with those available in the literature. Entropy generation is shown to decrease with an increase in Kn while increasing Br and Br/Ω results in increasing entropy generation.

Keywords: Couette–Poiseuille flow; parallel plates; slip flow; second law; entropy; temperature jump; first law; thermodynamics analysis; laminar forced convection; heat transfer; Newtonian fluids; microchannels; exergy.

DOI: 10.1504/IJEX.2009.028575

International Journal of Exergy, 2009 Vol.6 No.6, pp.809 - 825

Published online: 19 Sep 2009 *

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