Indian Journal of Science and Technology

Abstract

This paper presents the entropy generation and pumping power for developing forced convection in a confocal elliptical duct with constant heat flux. Entropy generation is obtained for various aspect ratio (ε), various ratio of the minor axis to the major axis (α), various wall heat flux and various Reynolds number. It is found that with the increasing aspect ratio (ε) values and decreasing ratio of the minor axis to the major axis (α), total entropy generation and pumping power at fixed Reynolds number increases; with increasing wall heat flux values, total entropy generation and pumping power decreases; with increasing cross-sectional area of duct values, total entropy generation and pumping power decreases.
Keywords: Entropy, Laminar flow, Confocal elliptical duct, Heat flux