Turbulent forced convection in a curved duct

This study presents the 2D numerical simulation results of turbulent forced flow in a curved duct using Fluent code. Governing equations are discretized using finite volume method with a staggered grid. Reynolds number based on the duct width and the inlet velocity takes several values: Re= 104, 6.104, 105and 5.105. Effect of inlet turbulent intensity is also discussed, by varying it from 1% to 10%. After the validation of the numerical method, results show good agreement as compared to the experimental data. The turbulent flow field characteristics are given by velocity and shear stress in many cross sections inside the duct. We found that increasing Reynolds number modifies the flow structure and we concluded also that the increase of the inlet intensity gives higher values of turbulent quantities for the same Reynolds number.