The fluctuating velocity field of a forced planar impinging gas jet

The fluctuating velocity field of a planar impinging gas jet is studied using particle image velocimetry, while anti-symmetrically forcing the jet column at the nozzle exit using planar synthetic jets. The jet exit velocity is set to = 11 m/s providing a jet Reynolds number of , and the impingement distance is held constant at eight times the nozzle width W. Under forcing conditions near unstable frequencies, both the stream-wise and …