Insight into the dynamics of micropolar fluid through annulus when the rate of entropy generation is significant

Abstract

AbstractIn irreversible processes, such as the motion of the bodies, heat and mass transfer processes, fluid flow, and so forth, the amount of heat produced is measured by entropy. Therefore, the present analysis is devoted to the entropy analysis of the flow of micropolar fluid in a cylindrical annulus. In addition to that, both the velocity and thermal slip conditions are also taken care of. The rotation of the outer cylinder preserves with constant velocity causes the flow in the annulus. The governing nonlinear complex equations are solved using Runge–Kutta–Felhberg method. The analysis is carried out to describe the flow phenomena, entropy generation, and the Bejan number characterized by the contributing parameters via graphs and tables. Furthermore, the concurrency of the results with earlier studies shows the validation of the convergence criteria of the method employed.