A review on the development of oscillating jets

The flow control method can effectively promote the mixing of the injected fluid with the surrounding fluid, and it has important applications in various fields, such as energy, chemical industry, aerospace and precision manufacturing, etc. Therefore, it has received widespread attention from scholars worldwide. In order to better understand the current situation and future development trend of oscillatory jets, this paper is the first to comprehensively summarize and classify the seven excitation methods of oscillatory jets, such as microjet, mechanical, feedback, blunt V-nozzle, impact V-plate, cavity self-excited flapping, film self-excited flapping, etc. A comparison of the principles of the different excitation methods and the characteristics of the resulting oscillating jets is conducted, pointing out the problems of the oscillating jet technology itself and the limitations of the industrial application of related technologies, and giving forecasts and suggestions for the development of the oscillating jet technology.