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Abstract

This paper demonstrates the effect of convective cooling on a temperature dependent viscosity liquid flowing steadily through a cylindrical pipe. In this model, it is assumed that due to Newton’s cooling law heat is exchanged with the ambient and the viscosity model varies as an inverse linear function of temperature. The analytical expressions for fluid velocity and temperature are derived using Homotopy Analysis method and entropy generation rate, total entropy generated and the Bejan number for various parametric values are determined. Our results are compared with the previous work and found to be in good agreement.