Hybrid nanofluid on mixed convective radiative flow from an irregular variably thick moving surface with convex and concave effects

Abstract

The analysis explores the significance of thermal radiation on mixed convective boundary layer flow of a hybrid (SiO2–MoS2/H2O) nanofluid. The permeability of the stretched/shrinking surface is allowing the wall fluid suction, whereas radiation phenomenon is also incorporated in the presence of thermal convection. The combination of SiO2 nanoparticles and MoS2/H2O nanofluid are being modeled using the analytical nanofluid hybrid model in the present work. The hybrid nanofluid governing equations are transformed utilizing the similarity transformation technique. The transformed boundary value problem, then solved by bvp4c technique in MATLAB software. For specified values of various parameters the numerical results are obtained. The findings indicate dual solutions, up to some amount of stretching/shrinking parameter. The suction parameter decelerates the friction factor and accelerates the heat transfer rate. Also, the temperature augments due to the radiation and nanoparticles volume fraction in both solutions, whereas the velocity declines due to nanoparticles volume fraction.

Keywords

• Dual solutions
• Shrinking/stretching surface
• Nanofluid
• Thermal radiations
• MHD
• Mixed convection