Abstract
Boundary layer solutions are presented to study the effects of buoyancy on forced convective micropolar fluid flow and heat transfer in stagnation flows using the theory of micropolar fluids formulated by Eringen. Numerical solutions are given for the governing momentum, angular momentum and energy equations. Missing values of the velocity, angular velocity and thermal functions are tabulated for a range of values of the material parameters. Two flow regions, namely, the buoyancy-assisting and buoyancy-opposed cases are analyzed. The boundary conditions of isothermal as well as linear variation of wall temperature are considered. It is observed that the wall shear stress and surface heat transfer rate increase or decrease with the buoyancy force parameter depending upon the flow regime being buoyancy-assisted or buoyancy-opposed, respectively.
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