Abstract
The present article investigates the magnetohydrodynamic (MHD) three-dimensional nonlinear convective flow of an Oldroyd-B nanofluid over a stretching sheet. Heat transfer analysis is reported in the presence of nonlinear thermal radiation and heat generation/absorption. The effects of Brownian motion and thermophoresis are considered in energy and concentration expressions. Meaningful solutions are established for the velocity, temperature and concentration. It is observed that both components of velocity show opposite behavior for mixed convection parameter, ratio of concentration to thermal buoyancy forces and ratio parameter. Local Nusselt and Sherwood numbers are analyzed for the pertinent parameters. Temperature and heat transfer rate are enhanced for thermal radiation and temperature ratio parameters. It is observed that the impact of Brownian motion on the temperature and nanoparticle concentration is quite reverse.
•Magnetohydrodynamic (MHD) flow of Oldroyd-B is modeled in the frame of nonlinear convection.•Characteristics of heat transfer are studied in view of heat generation/absorption.•Nonlinear version of thermal radiation is considered.•Nanofluid model consists of Brownian motion and thermophoresis.•Local Nusselt and Sherwood numbers have been numerically analyzed.