Numerical Study for Mixed Convective Flow of a Radiative Nanofluid Over the Vertical Frustum of a Cone with Arrhenius Activation Energy and Binary Chemical Reaction

摘要

The present computational work aims to investigate the combined effects of thermal radiation, binary chemical reaction and Arrhenius activation energy on mixed convection nanofluid flow over the vertical frustum of a cone under Robin-type (convective) boundary condition. The Buongiorno'snanofluid model, which incorporates the Brownian motion and thermophoresis, is used for the present boundary layer analysis. Introducing the appropriate non-similarity variables, the governing coupled non-linear partial differential equations are converted into dimensionless form and thenefficiently solved by spectral collocation method along with the local linearization technique. A comprehensive report on the nanofluid velocity, temperature, solid volume fraction, solutal concentration along with the skin friction, Nusselt and Sherwood numbers are presented graphically anddiscussed for both aiding and opposing flow cases. The computational results explore that the heat and mass transfer rates are effectively enhanced by the thermal radiation parameter and Biot number.