Characteristics of a novel fluidic oscillator with movable feedback channels and resonators

In this study, a novel fluidic oscillator suitable for use as key component of flow control device is proposed and investigated through numerical simulations. The new layout adds resonators to typical with dual feedback channels, the length loop designed be adjustable. This movable channels can generate jet an adjustable frequency, it has smaller total pressure loss than baseline model. Numerical results show that movement regulates degree coupling between different orders frequencies. self-excited frequency more adaptive designs when dealing complex separation conditions, will stable because adjustment requires neither high-frequency mechanisms nor external energy input. Moreover, switching phenomenon observed in special cases, which may help improve efficiency compressor blades drastically changed dominant under off-design conditions or multiple frequencies, such tip leakage shock–boundary layer interaction.