Abstract

Effects of curvature on the fluid flow and heat transfer with axially uniform wall heat flux and peripherally uniform wall temperature in a tube are analyzed numerically. Solutions are available over a wide range of Prandtl numbers and Dean numbers up to 1305. It is found that the secondary flow circulations become more complex as the Dean number increases. Nusselt number increases are most evident at high Prandtl and Dean numbers. The introduction of a convergence parameter into the alternating direction implicit solution method results in substantially reduced computation time. A method of finding the optimum convergence parameter is described.

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