Sensitivity of a fluidic oscillator to modifications of feedback channel and mixing chamber geometry

Abstract This experimental study investigates the effects of internal geometry modifications on performance a curved Sweeping Jet actuator. The are applied to feedback channel and mixing chamber Coanda surface, resulting actuator properties evaluated using time-resolved static pressure measurements inside hot-wire external flow. major result is that small, localized sweeping jet can lead complete change in flow regime, making velocity distribution homogeneous, similar angled variant surface shape identified as primary cause adopting bifurcated or homogeneous regime. relationships between frequency, deflection angle, required supply pressure, fluctuations analyzed discussed detail. External behavior coherence characterized by phase-averaged, phase-locked profiles auto-correlation signals. Graphical abstract