Physical Mechanism of Tri-Electrode Plasma Actuator with Direct-Current High Voltage

Nishida, Hiroyuki; Nakai, Kumi; Matsuno, Takashi

doi:10.2514/1.j055560

Cited by 28 publications

(12 citation statements)

References 34 publications

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“…Concerning the DBDs, sliding discharge actuators involving three electrodes have also been designed (Moreau et al 2008, Bayoda et al 2015, Nishida et al 2017 with the purpose of elongating the discharge rather than separating the production and transport of the charged species.…”

Section: Introductionmentioning

confidence: 99%

Electric wind generation by nanosecond repetitively pulsed microplasmas

Orrière¹,

Moreau²,

Pai³

2019

J. Phys. D: Appl. Phys.

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A nanosecond repetitively pulsed microplasma generated between two tungsten electrodes in a pin-to-pin configuration is used as a supply of charged species to produce an electrohydrodynamic phenomenon when placed near a DCbiased electrode. We employed high-frequency particle image velocimetry in order to study the produced flow. The generated flow velocities are around 2 m s −1 with a deposited average power on the order of 1 W. The main characteristics of this flow and the impact of the frequency and the DC field are discussed. In the end, we further explain the impact of each microplasma event on flow modification.

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Section: Introductionmentioning

confidence: 99%

Electric wind generation by nanosecond repetitively pulsed microplasmas

Orrière¹,

Moreau²,

Pai³

2019

J. Phys. D: Appl. Phys.

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show abstract

Section: Introductionmentioning

confidence: 99%

“…9 Subsequently, the jet vectoring characteristics of TED plasma actuators were studied via experiments and simulations. 10,11 The results revealed that the induced jet varies greatly depending on the applied DC voltage, and TED plasma actuators can increase both the body force and power efficiency. 12,13 Nevertheless, the analysis of TED-induced flow characteristics has been limited to the continuous actuation mode, and the performance modification mechanism of a pulsed TED plasma actuator has not yet been clarified.…”

Section: Introductionmentioning

confidence: 99%

Flow visualization and mechanisms of three-electrode sliding discharge plasma actuator

Zheng

Chen

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part G:

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The unsteady flow characteristics induced by a three-electrode sliding discharge plasma actuator under different actuation modes were analyzed by ensemble averaged and phase-locked particle image velocimetry. The discharge morphologies, voltage–current waveforms, and particle image velocimetry data in continuous mode were compared to clarify the performance modification mechanism of the pulsed three-electrode sliding discharge. The particle image velocimetry results revealed that deformation of the electromagnetic field around the additional electrode caused by applying a high DC voltage triggers changes in the induced flow field. When the three-electrode sliding discharge plasma actuator is actuated in continuous mode, a strong accelerated wall jet and homogeneous discharge region covering the whole gap between the two exposed electrodes are generated. The large discharge extension mainly results from the accelerated drift of positive ion particles created during the positive half cycle, while negatively ionized particles have a significantly larger impact on the induced velocity production process. In the pulsed mode, when a positive high DC voltage ( VDC = 18 kV) is applied to the additional electrode, both the size and magnitude of the induced vortex structures increase, and highly accelerated regions are periodically generated. When V DC = −18 kV, the induced velocity field evens out, the accelerated region becomes less obvious, the intensity of both the primary and secondary vortices decreases, and the vortex structure dissipates faster, owing to the turbulent motion of ionized particles. An additional positive DC component attracts the negatively ionized particles during the negative half cycle, improving the velocity and intensity of the stream-wise vortices, which is very attractive for flow control applications.

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“…Especially, a tri-electrode plasma actuator was proposed and reported to achieve drastic performance improvement. The thrust force is up to ten times larger than that of the conventional type (Moreau et al, 2008, Matsuno et al, 2016, Nishida, et al, 2017. It has an additional exposed electrode on the opposite side of the AC-high-voltage electrode, and DC high voltage is applied to the third electrode.…”

Section: Introductionmentioning

confidence: 99%

Investigation on performance characteristics of dielectric discharge plasma actuator using pulsed-dc waveform

Nakai

Nishida

Oshio

2018

JFST

Self Cite

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Dielectric Barrier Discharge Plasma Actuator (DBDPA) is one of active flow control devices, which generates a wall-surface jet utilizing atmospheric discharge. However, the enhancement of the jet is indispensable for application to high Reynolds number flow because the flow speed is typically only up to several meters per second. In recently, it was reported that a Pulsed-DC voltage waveform can drastically improve the jet thrust (McGowan et al., 2016). In the Pulsed-DC waveform, the high DC voltage rapidly drops to zero and gradually recover. In the original idea, the DC high voltage is applied to the top electrode and the Pulsed-DC waveform is applied to the bottom electrode. In this study, firstly, we conduct experiments using the same method proposed by the previous study, and next, the DBDPA, in which the top electrode is powered by the Pulsed-DC waveform and the bottom electrode is electrically grounded, is investigated. Finally, we propose a new waveform which is a sinusoidal voltage with periodical pulsed-earthing. As a result, the DBDPA with Pulsed-DC voltage waveform cannot generate strong wall-surface jet, and on the other hand, the proposed waveform generates a significant jet. Even though its strength is the same magnitude as that by the simple sinusoidal waveform, it is confirmed that the jet thrust is enhanced at phases before and after the pulsed-earthing; the tentative thrust increment is up to 32 %.

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Physical Mechanism of Tri-Electrode Plasma Actuator with Direct-Current High Voltage

Cited by 28 publications

References 34 publications

Electric wind generation by nanosecond repetitively pulsed microplasmas

Electric wind generation by nanosecond repetitively pulsed microplasmas

Flow visualization and mechanisms of three-electrode sliding discharge plasma actuator

Investigation on performance characteristics of dielectric discharge plasma actuator using pulsed-dc waveform

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