Analytical and Numerical Study on Cross Diffusion Effects on Magneto-Convection of a Chemically Reacting Fluid with Suction/Injection and Convective Boundary Condition

• Published in: Diffusion and defect data. Solid state data. Pt. A, Defect and diffusion forum Vol. 401; pp. 63 - 78
• Main Authors: Sivasankaran, S., Makinde, Oluwole Daniel, Bhuvaneswari, Marimuthu, Eswaramoorthi, Sheniyappan
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.05.2020
• Subjects: Absorption; Boundary conditions; Boundary layer flow; Chemical reactions; Convection; Diffusion effects; Exact solutions; Heat; Heat generation; Heat transfer; Mass transfer; Nonlinear equations; Parameters; Partial differential equations; Porous media; Runge-Kutta method; Suction; Surface chemistry; Time dependence; Viscous fluids; Suction; Heat Generation; Convective Boundary Condition; MHD; Chemical Reaction; Injection; Soret Effect; Dufour Effect
• ISSN: 1012-0386; 1662-9507; 1662-9507
• DOI: 10.4028/www.scientific.net/DDF.401.63

The purpose of this paper is to investigate the Soret and Dufour effects on unsteady mixed convective boundary layer flow of a viscous fluid over a stretching surface in a porous medium in the presence of magnetic field with heat generation/absorption, chemical reaction, suction/injection and convective boundary condition. The governing time-dependent partial differential equations are transformed into non-linear ordinarydifferential equations using similarity transformations. These equations subject to the appropriate boundary conditions are solved analytically by homotopy analysis method (HAM) and numerically by Runge-Kutta fourth order method and shooting technique.The numerical solution is compared with analytical solution. The influence of the different parameters on velocity, temperature and concentration profiles are discussed in graphical as well as in tabular form. It is observed that the fluid velocity and temperature increase on increasing the buoyancy ratio parameter and heat generation/absorption parameter. Also found that the surface heat and mass transfer rates increase on increasingthe suction/injection and heat generation/absorption parameters.