Double diffusive mixed convection flow from a vertical exponentially stretching surface in presence of the viscous dissipation

• Published in: International journal of heat and mass transfer 2017-09, Vol.112, p.758-766
• Main Authors: Patil, P.M., Latha, D.N., Roy, S., Momoniat, Ebrahim
• Format: Article
• Language: English
• Subjects: Boundary layer; Computational fluid dynamics; Convection; Dissipation; Double diffusive mixed convection; Exponentially stretching sheet; Finite difference; Finite difference method; Fluid flow; Heat transfer; Mass transfer; Newton’s linearization scheme; Non-similar solution; Nonlinear differential equations; Nonlinear equations; Nusselt number; Partial differential equations; Physical properties; Skin friction; Stretching; Suction
• ISSN: 0017-9310; 1879-2189
• DOI: 10.1016/j.ijheatmasstransfer.2017.04.120

•Double diffusive mixed convection on an exponentially stretching surface is studied.•Implicit finite difference method is used for numerical simulation.•The skin friction parameter increases at the wall as velocity ratio parameter increases.•The heat transfer rate decreases as heat generation parameter increases. This paper is devoted to obtain non-similar solutions for the effect of viscous dissipation on the steady double diffusive mixed convection flow over a vertical exponentially permeable stretching surface. The non-linear partial differential equations governing the flow, thermal and species concentration fields are written in the non-dimensional form by using suitable group of transformations. The final non-dimensional set of coupled partial differential equations is solved using the implicit finite difference method in combination with the Newton’s linearization technique. The effects of various non-dimensional physical parameters on velocity, temperature and species concentration fields are discussed. The presence of the suction/injection at the surface expedites the mass transfer phenomena. The numerical results in terms of the skin friction coefficient, the rate of heat transfer in terms of local Nusselt number and mass transfer rate in terms of Sherwood number shown graphically for various physical parameter involved in the problem. The present results are compared with previously published work, and these comparisons are found to be in excellent agreement.