Effect of radiation absorption and buoyancy force on the MHD mixed convection flow of Casson nanofluid embedded with Al50Cu50 alloy nanoparticles

Abstract

Purpose: The purpose of this paper is to report the effects of radiation absorption and buoyancy forces on the boundary layer analysis of Casson nanofluid past a vertical plate in a porous enclosure filled with Al50Cu50 alloy nanoparticles. Design/methodology/approach: The authors reconstructed the controlling equations as a group of nonlinear ODEs and solved analytically using perturbation technique. The vital interest in this analysis is to examine the influence of sundry physical parameters on the common profiles (velocity, temperature and concentration) conferred through the plots. Tabular values are listed to discuss the skin friction factor, heat and mass transfer rates. Dual solutions are observed for Newtonian and non-Newtonian fluid cases. Findings: Acquired results indicate that the Casson fluid plays a major role in controlling heat and mass transfer rates as compared with Newtonian fluid. Also, raise in volume fraction of nanoparticles regulates the thermal fields, discerns the velocity fields. The authors established the comparison of present results with previously published results and they are found in good agreement for limited cases. Originality/value: Because of the substantial properties of aluminium and its alloys such as, extreme corrosion resistance, exalted electrical and thermal conductivities and ease of fabrication they achieved tremendous applications in transportation especially in space and aircrafts, in the production of electrical transmission lines. In view of these, the current literature is perpetrated to probe the impact of radiation absorption and buoyancy forces on the heat and mass transfer analysis of Casson nanofluid in the presence of Al50Cu50 alloy nanoparticles. © 2018, Emerald Publishing Limited.