Laminar mixed convection from a circular cylinder using a body-fitted coordinate

A numerical investigation of laminar mixed convection from a horizontal isothermal cylinder is presented. The governing equations in terms of the stream function, vorticity and temperature are expressed in a bodyfitted coordinate system and solved numerically by the spline alternating direction implicit method. Results are presented for Reynolds number Re from 20 to 100 with Grashof numbers up to Gr = 5Re2. The Prandtl number was kept at a constant value of 0.7. Results are presented for the streamlines, velocity vectors, and isotherms as well as the local and average Nusselt number at different values of the Reynolds number and Grashof number. Comparison with previous experimental results shows good agreement.