Analysis of Reynolds stress equations for stratified rotating homogeneous shear flow

摘要

An assessment of the Reynolds stress model of Gibson and Launder (GL model) in the prediction of rotation effects on stably stratified homogeneous shear flows has been conducted. The GL model is found to be capable of predicting the stabilizing and destabilizing effects of rotation. However, the quantitative predictions of the GL model are rather quite poor. In particular, the bifurcation diagrams of (ε/SK) are found not to be consistent with experimental findings. Deficiencies are traced to the pressure-strain model and the modeled dissipation equation.