Numerical investigation of the influence of nozzle geometrical parameters on thrust of synthetic jet underwater

摘要

Highlights?The results in this paper can guide the optimal design of synthetic jet actuator underwater.?The mathematical model of thrust given in this paper can assist the analysis of the mechanism behind thrust characteristics of synthetic jet underwater.?The findings in this paper can help understanding of mechanism behind thrust generation of synthetic jet underwater.AbstractThe thrust characteristic and efficiency of synthetic jet underwater is easily affected by the geometrical parameters. In this paper, the influence of nozzle geometrical parameters on the thrust of synthetic jet underwater is investigated through numerical method. The geometrical parameters studied include nozzle diameter and nozzle height. The numerical method is validated using the experiment data. A mathematical model of the thrust is established. This model decomposes the thrust into three parts. By adjusting the weights of these parts, the dynamic characteristic of the thrust can be rebuilt. Using this method, the mechanism be