Numerical Simulation of Three Dimensional Turbulent Flow and Heat Transfer Within a Multi-Ribbed Cylindrical Duct

Abstract

Turbulent flow and heat transfer within stationary and rotating cylindrical ribbed ducts is simulated using a finite element model. The transfer of heat from the solid walls into the fluid is effected using a coupled solid/fluid model and details of the rapid local variation of local Nusselt, especially adjacent to the ribs, is predicted. The enhancement of heat transfer, when compared with heat transfer within a smooth rotating duct, due to the incorporation of ribs is demonstrated. The numerically determined bulk heat transfer rates are also compared with experimental results.