Profiles of two elevated side-by-side turbulent jets in a cross flow

Single point measurements of 2 components of turbulent velocity and their cross moments were made downstream of 2 elevated side-by-side turbulent jets in a cross flow. The distance between the 2 side-by-side jets was 2-jet diameter and the jets' nozzles were outside the cross flow boundary layer. The experiments were carried out in a subsonic wind tunnel with a cross flow mean velocity of 4.65 m/sec. The ratio of jet to cross flow momentum was 3.3 and the jets' Reynolds number based their diameters was nearly 6,200. Measurements were carried out at 4 different planes of x/d = 2, 5, 10.7, and 15.7. Here x is the streamwise direction along the cross flow and d is the inside diameter of the jet nozzle. Results are compared with the corresponding results for the same conditions but when the jets were flush with the surface within the cross flow turbulent boundary layer. For the elevated jets results indicate diffuse interactions between the jets-wakes and the stacks-wakes in the near field and intense interactions within the jets-wakes, indicating significant contributions of the jets' vortices to the counter-rotating vortex pair (CVP) downstream.