Profiles of two side-by-side turbulent jets with different momentum ratios in a cross flow

Single point measurements of 2 components of turbulent velocity and their cross moments were made downstream of 2 side-by-side turbulent jets with different momentum ratios in a cross flow. The distance between the 2 side-by-side jets was 2-jet diameter and the jets' nozzles were flush with the wind tunnel surface of the working area within the turbulent boundary layer. The experiments were carried out in a subsonic wind tunnel with a cross flow free stream mean velocity of 4.65 m/sec. The ratios of jet to cross flow momentums for the first jet, rj1, was 3.3 and for the second jet, rj2, were 6.6 and 13.2, respectively. The Reynolds numbers based on jet diameter were nearly 6,200 for the first jet and 12,400 and 24,800 for the second jet. Measurements were carried out at 2 different planes of x/d = 1 and 5. In addition, the trajectories and other turbulence statistics are obtained along axial mid-planes of the 2 jets and the axial mid-plane between the 2 jets up to x/d = 15. Here x is the streamwise direction along the cross flow and d is the inside diameter of the jet nozzle. Results indicate the possibility of generating strong axial vorticity, resulting in Increased circulation and a lift force when rj2 = 6.6.