Abstract
An analysis is presented to study the effects of buoyancy on forced convection in an axisymmetric stagnation flow of micropolar fluids over a vertical cylinder with arbitrary temperature variations. Numerical solutions are given for the governing momentum, angular momentum, and energy equations. Two flow regions, namely the buoyancy assisted and buoyancy opposed cases, are analyzed. It is observed that the wall shear stress and surface heat transfer rate increase or decrease with the buoyancy force parameter depending upon which flow regime is being considered. The effect of Prandtl number on the flow field in both the flow regimes is discussed.
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