抄録
Water flows in a fluidic oscillator with a target were simulated numerically for Reynolds number range from 35 to 699. The fluidic oscillator consists of a nozzle, a short diffuser, a target and two feedback channels. The possible application of this oscillator is a miniature liquid mixer. It is found that the simulated flow patterns, oscillation frequency and minimum Reynolds number agree well with the previous experimental study. The simulated jet displacement is correlated well with pressure difference in control ports. It is also observed that the deflected jet impinges on a rear port of feedback channel and the resulting high-pressure accelerates flow in the feedback channel. Based on the velocities and pressures in the control ports, the flow mechanism of the oscillation is explained.
