Numerical Modeling of Turbulent Flow and Heat Transfer in Rotating Cavities

Abstract

The present work considers the numerical modeling of turbulent flow in rotating cavities with a radial imposed flux and a preliminary examination of heat transfer prediction. Two turbulence models are studied: the standard k– ∈ low–Reynolds–number approach and a zonal approach using second–order algebraic stress model in the core region adapted to rotating flows. The computational procedure is based on a finite volume method. Predictions are compared with experimental data in the literature. The results bring to light the importance of a detailed near–wall treatment in order to properly capture the Ekman layer region. Second–order modeling seems to be necessary to attain a wider practical value, particularly in the presence of recirculation zones and three–dimensional effects in strong rotation.