Analysis of zero and nonzero normal mass fluxes of a Newtonian nanofluid flow

In this paper, a Newtonian nanofluid flow over a stretching surface is considered to examine the effects of zero and nonzero normal fluxes towards the profiles of the flow. Using similarity transformations, the nonlinear governing equations of the model are reduced to a set of nonlinear ordinary differential equations. The zero and nonzero normal fluxes appear in the initial condition for the nanoparticle volume fraction. A semi-analytic approach will be employed to solve this model. The expression of Sherwood number for the nanofluid flow under the zero normal flux condition which is claimed to be identically zero by previous researchers will be discussed. The numerical results obtained for selected values of emerging parameters are also tabulated and graphed.