J.V. Ramana Reddy

Dual Solutions for Thermo Diffusion and Diffusion Thermo Effects on 3D MHD Casson Fluid Flow over a Stretching Surface

In this paper, we analyse the thermo diffusion and diffusion thermo effects on MHD Casson fluid flow over a linear/nonlinear stretching sheet. By making use of appropriate similarity transformations, the governing equations of the flow are reduced into a set of nonlinear coupled ordinary differential equations. Further, these equations are solved numerically using Runge-Kutta based shooting technique. The effect of pertinent parameters on velocity, temperature and concentration profiles along with friction factors, local Nusselt and Sherwood numbers are discussed and presented with the help of graphs and tables. From the results, we found that heat transfer performance on the flow over a nonlinear stretching surface is higher than that of the flow over a linear stretching surface.

A Comparative Study on MHD Flow of a Newtonian/non-Newtonian Fluid past a Stretching Surface with Nonlinear Radiation and Convective Boundary Conditions

This article examines the effects of nonlinear thermal radiation and viscous dissipation on Newtonian and non-Newtonian fluid flows over a stretching surface. The convective boundary conditions are used in this study. A uniform magnetic field is applied in the flow field. Applying suitable similarity transformations in the governing partial differential equations lead to a nonlinear differential system, which is solved by using Runge-Kutta-Fehlberg integration scheme. Effects of various pertinent parameters on velocity and temperature profiles are sketched and discussed in detail. The numerical values for friction factor and heat transfer coefficient were also obtained and presented in tabular forms. Results depict that Newtonian fluid attains the highest velocity when compared with non-Newtonian fluid. Also Eckert number and temperature ratio parameters have tendency to enhance the fluid temperature.