Entropy generation analysis for magnetized peristaltic movement of nanofluid through a non-uniform asymmetric channel with variable thermal conductivity

This study examines the effects of entropy generation on MHD peristaltic flow of nanofluid through a non-uniform asymmetric channel by considering its rheological aspects. Thermal conductivity of the nanofluid is considered to vary with temperature. Thermophoresis, viscous heating, Brownian motion and Joule dissipation are involved in the mass species and thermal expressions. Mathematical modeling is carried out by making use of lubrication approximation. The resulting nonlinear system is solved using the Homotopy Analysis Method (HAM) which has rarely been used for such problems. Numerical results are also obtained by the Shooting method and comparison of both results is also provided. Nature of embedded constraints on momentum, thermal, concentration, Bejan number and entropy generation is reported. The presented results indicate that the strong magnetic field reduces the Bejan number. Moreover, entropy generation is less for flow through a divergent channel.

Automated summary

This study investigates the impact of entropy generation on MHD peristaltic flow of nanofluid through a non-uniform asymmetric channel, taking into account its rheological aspects. The results show that a strong magnetic field reduces the Bejan number and entropy generation is lower for flow through a divergent channel.