Experimental performance evaluation of three-electrode plasma actuators: Comparative analysis of sliding discharge, extended DBD, and innovative hybrid DC discharge

Tite: Experimental performance evaluation of three-electrode plasma actuators: Comparative analysis of sliding discharge, extended DBD, and innovative hybrid DC discharge (DOI)
​​​​​​​Authors:  Mostafa Amiri Tayyebi, Sohrab Gholamhossein Pouryoussefi, Alireza Doustmahmoudi.
Journal: Journal of Electrostatics
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Abstract: Despite advances in conventional and multi-electrode plasma actuators, further enhancement of induced flow remains challenging. This study experimentally compares three TED discharge modes in addition to a novel hybrid AC-DC discharge under identical excitation. Induced velocities and boundary-layer thicknesses were measured at multiple locations. Compared with the baseline modes, the Hybrid configuration, using opposite-polarity DC on the outer electrodes, produced the highest peak induced velocity, about 10% higher than the maximum EDBD value, while generating thicker boundary layers with only moderate additional power consumption. Results indicate that Hybrid TED actuators are a promising direction for stronger plasma-based flow control.