Turbulence Closure and Prediction of the Wake in a Rotating Wall Shear Layer

Abstract

The turbulent wake interacting with the rotating wall shear layer is studied analytically and numerically. The pressure-strain correlation term in the Reynolds stress transport equation is remodeled to represent the effect of rotation. The standard correction for the near-wall effect is also incorporated in the modified Reynolds stress closure model. The rotation-modified Reynolds stress closure model is applied to predict the fully developed and the developing flows in a rotating duct and the three-dimensional wake developing in a rotating wall shear layer. The complex turbulent flow affected by the rotation and the wall damping is predicted with an accuracy sufficient for practical purposes.