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An analysis for the axi-symmetric laminar boundary layer mixed convection flow of a viscous incompressible fluid towards a stretching cylinder is presented. Instead of no-slip boundary condition, velocity slip is assumed at the boundary. Similarity transformations are used to convert the partial differential equations corresponding to the momentum and heat equations into highly non-linear ordinary differential equations. Numerical solutions of these equations are obtained by shooting method. It is found that for buoyancy aided flow, velocity increases with increasing mixed convection parameter whereas the temperature decreases in this case but opposite trend is noted in case of buoyancy opposed flow. Due to velocity slip, fluid velocity decreases initially but the temperature increases. The skin friction as well as the heat transfer rate at the surface is larger for a cylinder compared to those for a flat plate.
boundary layer, mixed convection, stretching cylinder, heat transfer, velocity slip, similarity solution.
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