Numerical prediction of transitional characteristics of flow and heat transfer in a corrugated duct

The numerical prediction of the transitional properties of fluid flow and heat transfer in periodic fully developed corrugated duct was performed by applying a Lam-Bremhorst low Reynolds number turbulence model. The predicted transitional Reynolds number was lower than the value for the parallel plate duct and it decreased with increasing corrugation angle. Experiments were also conducted for pressure drop measurements and for flow visualization.