Entropy and exergy analysis on peristaltic pumping in a curved narrow channel

Abstract

AbstractA mathematical model is presented to study the thermal characteristics in terms of entropy generation rate and thermodynamic potential of improvement for peristaltic pumping of a viscous fluid in a curved channel. Radial magnetic field effect is also taken into account. Avoidable and unavoidable exergy destruction concepts are further utilized. Computations of the entropy generation rate are evaluated in terms of stream function and temperature field. Avoidable exergy destruction is computed through entropy function and its minimum value. Impacts of parameters like the curvature ratio, Hartmann number, and viscous dissipation parameters on the average entropy generation rate, Bejan number, and avoidable exergy destruction are analyzed through graphs. Contours for the temperature field and entropy generation are also illustrated to examine the effects of curvature effects on thermal characteristics. Computed results indicate that the curvature of the channel and magnetic strength strongly influence the sources of entropy generation rate and avoidable exergy destruction. The observations demonstrate promising features of the bioinspired peristaltic pumping that can be utilized in various thermal systems.