MHD flow of Williamson nanofluid over a cone and plate with chemically reactive species.

An investigation is made to examine the influence of chemically reactive species and mixed convection on the magneto-hydrodynamic (MHD) Williamson nanofluid induced by a nonisothermal cone and plate in porous medium. In the boundary layer region, nanoparticles deliver potentials in increasing the impact of convective heat transfer. Joule heating effect is also considered. Similarity transformations are used to convert the coupled partial differential equations into a set of nonlinear ordinary differential equations with variable coefficients. The transformed governing nonlinear boundary layer equations are solved numerically by using amended form of Fehlberg's method. It is adequate to discuss several physical mechanisms such as analytical velocity, temperature and concentration profiles and also closed-form skin friction/mass transfer/heat transfer coefficients, all as given in the present analysis. The numerical results acquired for several physical mechanisms are revealed through plots for two different cases (cone and plate). It is found that temperature profile increases for large values of thermophoresis parameter, Brownian motion and Eckert number, but reduces for large values of Prandtl number. Moreover, concentration profile reduces for large values of Lewis number and Brownian motion. [ABSTRACT FROM AUTHOR]