Double Dispersion Effects on MHD Squeezing Flow of UCM Fluid through a Porous Medium

• Published in: Diffusion and defect data. Solid state data. Pt. A, Defect and diffusion forum Vol. 392; pp. 10 - 28
• Main Authors: Ojjela, Odelu, Kumar, N. Naresh, Kambhatla, Pravin Kashyap
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.04.2019
• Subjects: Compressing; Computational fluid dynamics; Dimensionless numbers; Fluid flow; Magnetohydrodynamics; Mass transfer; Moving walls; Nonlinear equations; Partial differential equations; Porous media; Skin friction; Porous Medium; Thermal Dispersion; Upper Convected Maxwell Fluid; Solutal Dispersion; Magnetic Field; Squeezing Flow
• ISSN: 1012-0386; 1662-9507; 1662-9507
• DOI: 10.4028/www.scientific.net/DDF.392.10

The objective of the current problem is to explore the impact of wall motion on flow, heat and species concentration of a UCM fluid in a magnetohydrodynamic Darcian channel. The flow is confined between two moving walls. The effects of the wall motion on the physical quantities for expanding and contracting cases are studied through non-dimensional numbers and variables. Numerical solutions for the highly nonlinear differential equations are obtained by reducing the governing PDE to ODE using well-established similarity variables. The variation of skin friction, Nusselt and Sherwood numbers has been investigated with the help of surface plots so that the influence of the squeezing number on the other non-dimensional parameters can be deeply understood. The results suggest that the squeezing channel intensifies the mass transfer and skin friction at the walls and it also increases the velocity, temperature and concentration of the fluid across the channel.