Structure of turbulence in curved wall boundary layers

A model has been developed for determining the structure of turbulent, inhomogeneous shear flows based on the identification of large eddies subject to strain imposed by the mean flow field with anisotropic transport. The model has been utilized to predict four variously curved wall boundary layers for which experimental data are available. The principal effects of (concave and convex) curvature on the structure of the boundary layer, locally and along the flow, can be established in each case. The implications of conventional two-equation and other models become evident from the necessity of including anisotropy and the resulting curvature parameters.