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首页> 美国政府科技报告 >Increasing the Performance of a Sliding Discharge Actuator Through the Application of Multiple Potentials
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Increasing the Performance of a Sliding Discharge Actuator Through the Application of Multiple Potentials

机译：通过应用多个电位提高滑动放电作动器的性能

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This work encompasses a comparison between a sliding discharge DBD actuator with grounded and AC biased sliding electrode driven at kHz frequency. The induced velocity in the bulk flow was recorded with PIV and compared for multiple potential splits between two test configurations and a baseline sliding discharge actuator over three test phases. In the first test phase, varying potential splits were examined between the primary and secondary electrode with the sliding electrode grounded. The potential splits induced a thicker induced jet than the baseline case with similar peak velocities on the order of 1.25 m/s at the 61 mm test point. The second test phase encompassed an examination of the effects of varying the potentials applied to the primary and sliding discharge electrode with the potential difference between the electrodes maintained at 15 kV. Induced velocities ranged from a low of 0.17 m/s to a high of 1.87 m/s. The data suggests that the induced velocity is primarily dependent upon the primary to secondary electrode potential split. Phase three examined the effect of applying an AC potential to the sliding discharge electrode. The induced jet decreases in height and the vertical velocity component decreases with an increasing bias on the sliding discharge electrode. Peak jet velocity increases with increasing bias on the sliding electrode until such bias reaches the ionization thresh hold of the bulk flow.

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