Numerical study of turbulent forced convection jet flow in a converging sinusoidal channel

In this paper two-dimensional incompressible flow in a confined sinusoidal converging jet in the turbulence flow regime is numerically investigated. Bending walls can improve heat transfer by increasing the total heat transfer surface and changing the behavior of the flow. Results have been obtained for the flow structure at different Reynolds numbers for steady asymmetric jet development at various values of the duct-to-jet width ratio (aspect ratio) and different amplitudes. The present computations are in a very good agreement with experimental results in open literature. The results show that by increasing the Reynolds number, aspect ratio and amplitude on the average the Nusselt number will increase.

► For the first time jet flow in a converging sinusoidal channel is investigated.
► We simulated unsteady jet flow in turbulent regime in a converging sinusoidal duct.
► Dependency of Nusselt number to amplitude and aspect ratio is studied.