Sweeping Jetと主流の干渉により作り出す流れ構造

抄録

The sweeping jet from a fluidic oscillator has attracted attention as an active flow control device. Many studies on flow control techniques using a sweeping jet have been conducted. However, interaction between the sweeping jet and the main flow is expected to occur, and a complex vortex structure will be generated. The authors have reported the flow characteristics generated by interactions between the sweeping jet from the fluidic oscillator and the main flow based on stereo particle image velocimetry (PIV) measurement. Finally, the sweeping jet from the fluidic oscillator spreads out over a wider range due to its interaction with the main flow. At the high-velocity rate, V_j/V₀, the high-velocity jets at the center of the sweeping jet are surrounded by low-velocity jets with a strong rotational component at the outside. The purpose of the present study is to clarify the development process of the detailed vortex structure generated by the interaction between the sweeping jet from the fluidic oscillator and the main flow.