Navier’s Slip Effect on Mixed Convection Flow of Non-Newtonian Nanofluid: Buongiorno’s Model with Passive Control Approach

Abstract

This article is devoted to the study of Navier’s slip effect on MHD mixed convection boundary layer flow of non-Newtonian nanofluid over a stretching surface. The flow is induced due to the continuously stretching surface. The mathematical modeling of the flow situation, is governed by Buongiorno’s nanofluid model with passively controlled nanoparticle boundary condition. To analyze the flow field behavior, the similarity transformation approach is adopted. The approximate similar solution of the problem is obtained using finite element method. Effects of active flow parameters on the quantities of engineering interests viz. skin friction coefficient, Nusselt number and flow variables viz velocity, temperature and nanoparticle concentration, are presented graphically. The Numerical results of the present investigation are validated with earlier published results. The findings suggest that the velocity slip plays a vital role in skin friction coefficient and Nusselt number of non-Newtonian nanofluid. It has been observed that the Brownian diffusion does not have very promising impact on Nusselt number as compared to results obtained in previous studies with active control of wall nanoparticles. The potential application of present investigation are in various industrial manufacturing processes such as cooling and/or drying of textile and paper, rolling sheet drawn from a die, manufacturing of crystalline materials, polymeric sheets, glass sheets, etc.