New concepts for Reynolds stress transport equation modeling of inhomogeneous flows

摘要: The ability to model turbulence near solid walls and other types of boundaries is important in predicting complex engineering flows. Most modeling has concentrated either on flows which are nearly homogeneous or isotropic, turbulent boundary layers. Boundary layer models usually rely very heavily the presence mean shear production due that shear. based assumption quasi-homogeneity. However, there many situations interest do not involve large rates quasi-homogeneous isotropic. Shear-free layers prototypical example such flows, with practical being separation reattachment, bluff body flow, high free-stream turbulence, free surface Although these as common variants flat plate layer, they tend be critical factors situations. developed intended extend classical into regions inhomogeneity. These production, but still applicable when those additional effects included. focus shear-free tests for models, results standard shearing also shown.