In this study, we used dielectric barrier discharge (DBD) plasma actuators to control and pulse two-dimensional free air micro-jets at low Reynolds numbers (Re < 200), avoiding the use of mobile and mechanical devices such as valves. We performed experimental measurements and visualizations to characterize the effect of different DBD burst frequencies (1-80 Hz) and different DBD applied voltages, on both the external and internal flows. The total flow rate (including entrainment) was determined by PIV experiments. Preliminary results show an increase in the flow rate (20%) and a promising and effective method to pulse micro-jets at these frequencies.

在这项研究中，我们使用介电势垒放电（DBD）等离子体致动器以低雷诺数（Re  <200）控制和脉动二维自由空气微射流，从而避免使用阀门等移动和机械设备。我们进行了实验测量和可视化，以表征不同的DBD突发频率（1-80 Hz）和不同的DBD施加电压对内部和外部流动的影响。通过PIV实验确定总流速（包括夹带）。初步结果表明，在这些频率下，流速增加了20％，并且是一种有希望且有效的脉冲微喷射方法。