MHD CONVECTIVE FLOW OF SWCNTS-WATER AND MWCNTS-WATER NANOFLUID OVER A VERTICAL CONE WITH THERMAL RADIATION AND CHEMICAL REACTION

The analysis is carried out to investigate the MHD boundary layer flow, heat, and mass transfer characteristics of two carbon nanotubes, namely single-wall carbon nanotubes (SWCNTs) and multi-wall carbon nanotubes (MWCNTs), with water as the base fluid by taking thermal radiation and chemical reaction into consideration. Suitable similarity conversions are employed to reduce non-linear partial differential equations into the system of ordinary differential equations, and these equations, together with boundary conditions, are solved numerically using the finite element method. Velocity, temperature, and concentration distributions, as well as skin-friction coefficient, Nusselt number, and Sherwood number for diverse values of influencing parameters, are examined in detail and the results are displayed graphically and in tabular form. It is found that the rate of heat transfer (-theta'(0)) is remarkably higher in water-based, multi-wall carbon nanotubes than the single-wall carbon nanotubes as the values of nanoparticles volume fraction parameter rises in the boundary layer regime.