Effect of Prandtl Number for Casson Fluid Flow Over a Vertical Cylinder: Heatline Approach

With the aid of heatline visualization the current research paper investigates the Casson fluid flow over a heated cylinder. The working partial differential equations for this physical model are time dependent non-linear coupled. They are solved numerically by the FDM which is computationally stable and second accurate in space and time. The control parameters arising in the system are varied and the corresponding flow dynamics is analyzed with respect to the velocity gradients and heat transfer coefficients at the wall. The flow variables of Casson fluid observed to take more time to attain steady state than those of the Newtonian fluids. The heat function shows thicker profiles in the vicinity of surface of the cylinder. Further, the deviations from the wall between Casson fluid and the Newtonian fluid are shown.