EFFECT OF TEMPERATURE DEPENDENT VISCOSITY ON MIXED CONVECTION HEAT TRANSFER IN AN UNCONFINED FLOW ACROSS A CIRCULAR CYLINDER

Abstract

Newtonian or non-Newtonian fluid flow across circular cylinder has been studied extensively because of its numerous practical applications Bluff body has received a great deal of attention especially for the prediction of loads on engineering structures such as offshore platform supports, ocean pipelines, high buildings, bridge piers etc. and for analysis of wake control in aeronautical engineering as well (Mohammed and Salman, 2007). Reliable knowledge of flow characteristics and hydrodynamic forces exerted on bodies immersed in fluids is needed to design the support structures exposed to non-Newtonian fluids in polymer melt operations. Due to the simple nature of the geometry, this flow has been frequently used to gain insights into the physics of flow and to understand the wake dynamics of bluff bodies. Moreover, this geometry has also been used to validate numerical solution methodologies and to assess the efficiency of various numerical algorithms.