Eddies, streams, and convergence zones in turbulent flows

摘要: Recent studies of turbulent shear flows have shown that many their important kinematical and dynamical properties can be more clearly understood by describing the in terms individual events or streamline patterns. These flow regions are studied because they associated with relatively large contributions to certain average flow, for example kinetic energy, Reynolds stress, particular processes such as mixing chemical reactions, which may concentrated at locations where streamlines converge fast reactions (referred convergence C regions), recirculating eddying slow reactions. The aim this project was use numerical simulations develop suitable criteria defining these vortical zones. streaming (S) zones were defined order define whole field. It is concluded homogeneous sheared fields made up characteristic zones: eddy, C, S A set objective found describe circulate, diverge, form high streams velocity flow.