Double-diffusive natural convective boundary-layer flow of a nanofluid over a stretching sheet with magnetic field

Abstract

Purpose

The purpose of this paper, is to study the MHD double-diffusive natural convection of a nanofluid over a linearly stretching sheet using the Buongiorno model.

Design/methodology/approach

The transport equations are transformed into coupled similarity equations. The numerical self-similar solutions are compared with the literature for the special case of pure fluid flow and found to be in good agreement. Graphical results are presented to illustrate the effects of various fluid flow, heat transfer and nano concentration parameters for both assisting and opposing flows.

Findings

It is found that the heat transfer rate increases as nanoparticles and salt are suspended in water. It is also found that dual solutions exist for the stretching parameter.

Originality/value

First paper on this model for stretching sheet.

Citation

Akbar, N., Khan, z., Nadeem, S. and khan, W. (2016), "Double-diffusive natural convective boundary-layer flow of a nanofluid over a stretching sheet with magnetic field", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 26 No. 1, pp. 108-121. https://doi.org/10.1108/HFF-01-2015-0019