Numerical study of MHD hybrid nanofluid flow between two coaxial cylinders

Numerical study for flow of a hybrid nanofluid between two coaxial cylinders organized. Nanomaterial consists of graphene oxide (GO) and copper (Cu) nanoparticles in Kerosene oil base fluid. This hybrid nanofluid is taken between two coaxial cylinders. Inner cylinder is fixed while the outer cylinder exhibits rotation. A uniform magnetic field is taken along radial direction for examining flow and heat transfer characteristics. Joule heating is also accounted. Mathematical modeling is terms of ODEs (Ordinary Differential Equations) is constructed. These ODEs are nondimensionalized through appropriate variables. Such ODEs are then numerically tackled by bvp4c (built-in-shooting technique along with RK-4 algorithm) for solutions developed. Fluid velocity, pressure, skin friction, fluid temperature and Nusselt number are evaluated graphically under the effects of sundry variables. Higher magnetic parameter cause decline in velocity of both hybrid nanofluid (GO + Cu/Kerosene oil) and nanofluid (Cu/Kerosene oil). Temperature of both hybrid nanofluid (GO + Cu/Kerosene oil) and nanofluid (Cu/Kerosene oil) boosts for higher magnetic and Brinkman parameters. Decay in temperature in noticed against higher nanoparticle volume fraction for cupper. Nusselt number intensifies for nanoparticle volume fractions for both copper and graphene oxide nanoparticles.(c) 2022 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).

Automated summary

This paper presents a numerical study on the flow of a hybrid nanofluid between two coaxial cylinders. The results show that higher magnetic parameters lead to a decrease in the velocity of the hybrid nanofluid and nanofluid. Higher magnetic and Brinkman parameters increase the temperature of the hybrid nanofluid and nanofluid. The temperature decreases with an increase in the nanoparticle volume fraction for copper. The Nusselt number increases with the nanoparticle volume fraction for both copper and graphene oxide nanoparticles.