Abstract In this paper, an investigation on an annular Plasma Synthetic Jet Actuator (PSJA) utilizing a Surface Dielectric Barrier Discharge (SDBD) is reported. The work is focused at an investigation of the electric charges transported by the jet produced by the actuator and deposited on a target. Particularly, an assessment of the various factors that may affect the charge deposit process has been carried out. Experiments have been performed in a controlled environment with different electric configurations. This allowed to evaluate how the humidity rate affects and the dynamics of the electric charge build-up process. It was observed that humidity rate weakly affects the charge deposition, being the most notable effect an increase of the deposition time for higher humidity rate. Moreover, the performances of two different power supply systems, working at different voltage and frequency conditions, were compared. The two supplies have been set up do feed the actuator with the same power, in order to assess which voltage-frequency condition is more efficient at depositing electric charge on the target. It was observed that a higher applied electric field produces higher charge deposition rates.

中文翻译：

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通过环形等离子体合成射流致动器测量沉积在目标表面上的电荷分布：湿度和电场的影响

摘要 在本文中，报道了利用表面介电势垒放电 (SDBD) 的环形等离子体合成射流致动器 (PSJA) 的研究。这项工作的重点是研究由致动器产生的射流传输并沉积在目标上的电荷。特别是，对可能影响押金存款过程的各种因素进行了评估。已经在具有不同电气配置的受控环境中进行了实验。这允许评估湿度如何影响电荷积累过程的动态。据观察，湿度对电荷沉积的影响很小，最显着的影响是增加沉积时间以获得更高的湿度。此外，两种不同电源系统的性能，在不同的电压和频率条件下工作，进行了比较。这两个电源已设置为以相同的功率为执行器供电，以评估哪种电压-频率条件在将电荷沉积在目标上时更有效。观察到较高的施加电场产生较高的电荷沉积速率。