Simultaneous effects of convective conditions and nanoparticles on peristaltic motion

This article models the peristaltic transport of viscous nanofluid in an asymmetric channel. The channel walls satisfy the convective conditions. Effects of Brownian motion and thermophoresis are taken into account. The relevant flow analysis is first modeled and then computed for the series solutions of temperature and concentration fields. Closed form expression of stream function is constructed. Plots are prepared for a parametric study reflecting the effects of Brownian motion, thermophoresis, Prandtl, Eckert and Biot numbers. It is seen that temperature is an increasing function of Brownian motion, thermophoresis, Eckert and Prandtl numbers. However temperature is found to decrease when Blot number increases. It is also observed that the nanoparticle volume fraction field has opposite results for Brownian motion and thermophoresis parameters. Heat transfer coefficient increases via Biot, Brownian, thermophoresis, Prandtl and Eckert parameters. It is also worth mentioning to point out that the trapping increases for channel width and it decreases when the flow rate is increased. (C) 2013 Elsevier B.V. All rights reserved.