THE CURVED WALL-JET OVER A CIRCULAR-CYLINDER BEFORE THE INTERACTION OF 2 OPPOSING CURVED WALL JETS

A curved wall jet before the interaction of two identical curved wall jets over a circular cylinder was investigated experimentally. Using h ot-wire anemometry, the mean velocity, Reynolds stresses, and high ord er moments of the fluctuating velocity were measured. The turbulent ki netic energy and shear stress budgets were evaluated using the measure d data. The correlation coefficient, <(uv)over bar>/u'v', the normal s tress ratio, (v(2)) over bar/(u(2)) over bar, and the principal direct ion of the Reynolds stress are presented. The effects of curvature and adverse pressure gradient on these distributions are also discurssed. The turbulent kinetic energy and shear stress budgets in two regions before the interaction are analyzed in detail to illuminate the effect of the adverse pressure gradient on the turbulent transport.