Body Force Generation Control by Modulating Applied Voltage Waveform in Tri-Electrode Plasma Actuator

Nakai, Kumi; Hasegawa, Daichi; Hatamoto, Asami; Nishida, Hiroyuki

doi:10.2514/6.2019-0737

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…According to the velocity evolution, the velocities induced by extended dis- In general, due to the existence of positive DC high voltage, the fluid element is accelerated at the bias electrode, in-creasing the induced velocity up to 203%. Nakai [38] analyzed the mechanism of the positive EHD force generation around the bias electrode and the negative EHD force generation around the central electrode. The drift motion of positive ions in extended discharge generates the positive EHD force around the bias electrode.…”

Section: Comparison Of Induced Velocity Of Extended Discharge In Diff...mentioning

confidence: 99%

Discharge and flow characterizations of the double-side sliding discharge plasma actuator*

Liang

Zheng

2020

Chinese Phys. B

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We investigate the discharge and flow characterizations of a double-side siding discharge plasma actuator driven by different polarities of direct current (DC) voltage. The discharge tests show that sliding discharge and extended discharge are filamentary discharge. The irregular current pulse of sliding discharge fluctuates obviously in the first half cycle, ultimately expands the discharge channel. The instantaneous power and average power consumptions of sliding discharge are larger than those of the extended discharge and dielectric barrier discharge (DBD). The flow characteristics measured by a high-frequency particle-image-velocimetry system together with high-speed schlieren technology show that the opposite jet at the bias DC electrode is induced by sliding discharge, which causes a bulge structure in the discharge channel. The bias DC electrode can deflect the direction of the induced jet, then modifying the properties of the boundary layer. Extended discharge can accelerate the velocity of the starting vortex, improving the horizontal velocity profile by 203%. The momentum growth caused by extended discharge has the largest peak value and the fastest growth rate, compared with sliding discharge and DBD. However, the momentum growth of sliding discharge lasts longer in the whole pulsed cycle, indicating that sliding discharge can also inject more momentum.

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Section: Comparison Of Induced Velocity Of Extended Discharge In Diff...mentioning

confidence: 99%

Discharge and flow characterizations of the double-side sliding discharge plasma actuator*

Liang

Zheng

2020

Chinese Phys. B

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Experimental Study on the Working Characteristics of Tri-Electrode Plasma Actuator Utilizing a Combination of Corona and Barrier Discharges

2022

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A tri-electrode plasma actuator (TED-PA), which has an additional electrode with a DC voltage, induces jets from two facing electrodes and achieves larger thrust and higher efficiency than a conventional dielectric barrier discharge plasma actuator. However, there are problems such as the large potential difference between the exposed electrodes, which can cause sparks and device destruction. Therefore, it is necessary to clarify the working mechanism of TED-PAs and optimize their configuration and applied voltage. In this study, we obtained the discharge photograph, the thrust, and the flow velocity field and investigated the characteristics of the DC voltage and the frequency of the AC voltage. To isolate the effects of the discharge from the potential variation, a corona discharge plasma actuator and a TED-PA were compared. As a result, increasing the frequency of the AC voltage induced stronger jets from the AC and DC electrodes. This result indicates that the barrier discharge enhances the jet from the DC electrode without changing the potential difference between the electrodes.

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Body Force Generation Control by Modulating Applied Voltage Waveform in Tri-Electrode Plasma Actuator

Cited by 2 publications

References 11 publications

Discharge and flow characterizations of the double-side sliding discharge plasma actuator*

Discharge and flow characterizations of the double-side sliding discharge plasma actuator*

Experimental Study on the Working Characteristics of Tri-Electrode Plasma Actuator Utilizing a Combination of Corona and Barrier Discharges

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