Numerical assessment of MHD hybrid nanofluid flow over an exponentially stretching surface in the presence of mixed convection and non uniform heat source/sink

Abstract

The modern era is concerned about the problems related to heat transfer and energy storage. The hybridization of nanofluids stands an important study due to the enhanced thermophysical properties of these effective fluids. The distinguished response of hybrid nanofluids towards thermal conductivity is appreciated for heating and cooling industrial purposes. Thus, the current study intends to investigate the effect of magnetohydrodynamics and thermal radiation on aiding opposing flow of Al2O3−Cu/H2O hybrid nanofluid flowing over a porous exponentially stretching surface. The flow is influenced by the presence of stagnation point and non-uniform heat source/sink while the convective boundary conditions are also assumed. The flow control equations are exhibited according to the assumptions and a similarity transformation leads to a system of ordinary differential equations from a system of partial differential equations. The deduced system is solved numerically using bvp4c technique, built-in MATLAB based algorithm. The upshots spectacle the results for velocity and temperature profiles on behalf of various parameters affecting the hybrid nanofluid flow. The increasing values of magnetic parameter and velocity ratio parameter significantly impacts the velocity profile for assisting and opposing flows. The temperature profile escalates for higher values of thermal radiation parameter, Eckert number and Biot number. Moreover, the analysis delivers valued insights into the heat transfer and friction drag for the considered hybrid nanofluid model. The gained results can support study in applications involving nanofluid based systems.