Numerical simulation of unsteady triple diffusive mixed convection in NaCl-water and Sucrose-water solutions

摘要

The consequences of the presence of triple diffusive phenomenon on mixed convection from a continuously moving vertical plate are investigated in this paper under variations in time. The behavior of aqueous solutions, such as NaCl-water and Sucrose-water, are modelled and analyzed via a coupled system of nonlinear partial differential equations which are transformed into a dimensionless coupled system of nonlinear partial differential equations with the aid of non-similar transformations. The Quasi-linearization technique in association with the implicit finite difference scheme is employed to obtain non-similar solutions. The graphs acquired for momentum, thermal and species concentration fields involving the effects of the Richardson number, velocity ratio parameter, ratio of buoyancy parameter and Schmidt number of both solutal components have been depicted in a manner which assists in providing a physical interpretation of the results. The graphical interpretations for the skin-friction coefficient, Nusselt number and Sherwood number for both the aqueous solutions are also scrutinized and are discussed with proper physical explanations. (C) 2018 Elsevier Ltd. All rights reserved.