The fluidic oscillator is a device that generates an oscillating jet when supplied with fluid at pressure. The oscillator has no moving parts – the creation of the unsteady jet is based solely on fluid-dynamic interactions. Fluidic oscillators can operate at frequencies ranging up to 20 kHz, and are useful for flow control applications. The fluidic oscillator evaluated in the current study is c...

The article describes design and realization of an airflow structure for measurement. There are structure and electronic circuits design in the paper are described The principle of a flowmeter sensor operation is based on the mechanism of a fluidic oscillator. It uses fluidic paths in feedback. Oscillator samples have been made using different technologies and materials. Micromechanical shaping...

Using a no-moving-component output-fed bistable fluidic oscillator to control fluid flows into a parallel path has been recognized for a considerable time, but as yet it is not so widely adopted as its obvious benefits would deserve. This may be attributed to the encountered problems associated with its jet behavior, complicated by its loading characteristics. In order to investigate a typical ...

Self-switching microfluidic circuits that are able to perform biochemical experiments in a parallel and autonomous manner, similar to instruction-embedded electronics, are rarely implemented. Here, we present design principles and demonstrations for gravity-driven, integrated, microfluidic pulsatile flow circuits. With a common gravity head as the only driving force, these fluidic oscillator ar...

This paper demonstrates the closed-loop control of frequency and phase a fluidic oscillator using acoustic excitation. It is shown experimentally that use excitation modifies passive feedback mechanism slows down jet switching process. Closed-loop employed to vary oscillation at fixed flow rate track sinusoidal reference target without error, measurements from pitot probe in device. The control...

Abstract Fluidic oscillators show promise for use in aerodynamic flow control applications, with many studies reporting oscillation frequencies the 1–10 kHz range. Spyropoulos, “A Sonic Oscillator,” introduced a “sonic” oscillator whose frequency depends on inlet rate. The purpose of this paper is to demonstrate existence second mode operation (mode II) such an oscillator, separate physical mec...