FLUID-FLOW OF A ROW OF JETS IN CROSS-FLOW - A NUMERICAL STUDY

A detailed computer-visualized flowfield of a row of jets in a confine d crossflow is presented. The Reynolds-averaged Navier-Stokes equation s are solved by using a finite volume method that incorporates a parti al differential equation for incremental pressure to obtain a divergen ce-free flowfield. The turbulence is described by a multiple-time-scal e turbulence model. The computational domain includes the upstream reg ion of the circular jet so that the interaction between the jet and th e crossflow is simulated accurately. It is shown that the row of jets in the crossflow is characterized by a highly complex flowfield that i ncludes a horseshoe vortex and two helical vortices whose secondary ve locity components are corotating in space. It is also shown that the h orseshoe vortex is a ring of reversed flows located along the circumfe rence of the jet exit.