Abstract
A numerical solving procedure is described based on a semi-elliptic discretization of the averaged equations of motion describing turbulent flow through curved circular-sectioned tubes. It adopts Leonard's QUICK treatment of convection and Patankar's SIMPLER algorithm for handling the pressure-velocity connection. Applications are reported of laminar and turbulent flow in a 90° bend (adopting, in the latter case, the standard k~e Boussinesq viscosity model for the Reynolds stresses). Solutions of the thermal energy equation for this case indicate a marked rise in the average heat transfer coefficient at any section but with a five-fold variation in Nu between the inside and outside of the tube.
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