抄録
Aerodynamic structures of equal and unequal turbulence opposite impinging flows have been studied experimentally. Mean velocity profiles and two-dimensional instantaneous velocity near the flows impinging region have been measured by using a laser Doppler velocimetry (LDV) and a particle image velocimetry (PIV). The velocity of the stagnation streamline is not decrease linearly from the nozzle exit. The velocity gradient decreases with increases turbulence and the aerodynamic structure near the impinging region are also influenced duo to turbulence motion. For equal turbulence condition, the mean stagnation point located in the middle of both nozzle exits. On the other hand, for unequal conditions, the stagnation point sifts to the strong turbulence side.
