Single-Pixel Particle Image Velocimetry for Characterization of Dielectric Barrier Discharge Plasma Actuators

Nonomura, Taku; Ozawa, Yuta; Ibuki, Takuma; Nankai, Koki; Komuro, Atsushi; Nishida, Hiroyuki; Kotsonis, Marios; Kubo, Noritsugu; Kawabata, Hideaki

doi:10.2514/1.j059239

Cited by 27 publications

(5 citation statements)

References 21 publications

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“…The body force is predominantly concentrated within 0-2 mm downstream of the exposed electrodes, spanning a thickness of 2 mm. This distribution aligns with findings from Nonomura et al (2020), albeit with a reduced magnitude in this study. It can be hypothesize that the thin dielectric layer in the referenced study (Matsunuma and Segawa 2020) might be a contributing factor.…”

Section: Estimation Of Body Force In the Flow Fieldsupporting

confidence: 91%

Optimizing electrode arrangement in plasma actuators: a study on induced velocity and efficiency

Zhou,

Yousif,

Zhang

et al. 2024

Fluid Dyn. Res.

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This study investigates the performance of two types of multi-encapsulated electrode (MEE) plasma actuators, compared to a typical dielectric barrier discharge (DBD) plasma, in quiescent air. Our objective is to determine whether the multiple encapsulated structures can enhance the performance of the plasma actuator. We analyse the flow field using particle image velocimetry (PIV) and schlieren visualisation and calculate the distribution of body force over the gas volume based on the Navier–Stokes equations from velocity measurements. Our findings demonstrate that the starting vortex behaviour is influenced by electrode arrangement. Specifically, we observe that when the first encapsulated electrode is positioned closer to the exposed electrode, then a significantly higher induced velocity can be obtained compared to the baseline condition. In fact, the induced velocity can be increased by up to 1.5 times under this optimise configuration. These results highlight the importance of electrode arrangement in the plasma actuator design. Based on our body force estimation, we find that MEE plasma actuators exhibite a significantly higher momentum transfer, particularly in the wall normal direction. Our investigation on the mechanical efficiency also reveals that the optimised configuration proposed in the present study can significantly enhance the efficiency. In fact, we observe a four-fold increase in maximum efficiency compared to the typical configuration. These results suggest that the proposed configuration could be a promising solution for improving the mechanical efficiency of plasma actuators.

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Section: Estimation Of Body Force In the Flow Fieldsupporting

confidence: 91%

Optimizing electrode arrangement in plasma actuators: a study on induced velocity and efficiency

Zhou,

Yousif,

Zhang

et al. 2024

Fluid Dyn. Res.

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show abstract

“…A previous study reported that the PIV measurement with the single-pixel ensemble correlation method highly improves the spatial resolution and works properly to visualize the wall jet induced by the DBD plasma actuator [40]. It should be noted that only the time-averaged spatial distribution can be obtained with the single-pixel ensemble correlation method since this method considers the cross-correlation in the time series direction.…”

Section: Flow Visualizationmentioning

confidence: 99%

Surface-charge control strategy for enhanced electrohydrodynamic force in dielectric barrier discharge plasma actuators

Sato

Mitsuhashi

Enokido

et al. 2021

J. Phys. D: Appl. Phys.

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A relationship between electric potential distribution on a dielectric surface and electrohydrodynamic (EHD) force generation is experimentally investigated to improve the performance of dielectric-barrier-discharge (DBD) plasma actuators. Direct current (DC) biased repetitive pulses are applied to the DBD plasma actuator, which has two or three electrodes. Although the additional downstream exposed electrode has little effect on the electrical and optical characteristics of the DBD plasma actuator, the electric potential distribution strongly depends on the presence of the additional exposed electrode. Moreover, the saturation time of the surface charge is hundreds of milliseconds when the pulse repetition frequency is , showing a large difference in the time scale of surface DBD. We also demonstrated a significant improvement in the generation of ionic wind by adding an additional downstream exposed electrode owing to the prevention of the electric field screening. A concept that separates the ionization process and the acceleration process works properly for improving the performance of the DBD plasma actuators, but at the same time, the dynamics of the surface charge should be controlled so that a strong electric field is generated rather than the electric field being screened by surface charge.

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“…Thus, the single-pixel ensemble correlation method [27,28] is employed to obtain a time-average velocity field with the unit of a single pixel. This method effectively works for the detailed investigation of the wall jet induced by a single-stage DBD plasma actuator [29]. The spatial resolution in the present study is approximately 60 µ m/pixel.…”

mentioning

confidence: 92%

Experimental demonstration of low-voltage operated dielectric barrier discharge plasma actuators using SiC MOSFETs

Sato

Ozawa

Komuro

et al. 2020

J. Phys. D: Appl. Phys.

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Successful operation of a multi-stage dielectric-barrier-discharge (DBD) plasma actuator is demonstrated by operating it on voltage one order of magnitude lower than that of a conventional single-stage DBD plasma actuator. An applied voltage waveform of direct current (DC) voltage combined with high-frequency repetitive pulses is generated by a simple power system consisting of a DC power supply and silicon carbide metal-oxide-semiconductor field-effect transistors. The time-averaged flow field obtained by particle image velocimetry indicates that a successively accelerated ionic wind is obtained by the eight-stage DBD plasma actuator. The velocity of the induced ionic wind increases with increasing DC voltage and repetitive pulse frequency. The maximum velocity of approximately 4.5 m s−1 is achieved when the DC voltage of is applied with the switching frequency of , suggesting that the proposed multi-stage DBD plasma actuator induces the same level of ionic wind as a conventional high-voltage-operated single-stage DBD plasma actuator, even with a low voltage.

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Single-Pixel Particle Image Velocimetry for Characterization of Dielectric Barrier Discharge Plasma Actuators

Cited by 27 publications

References 21 publications

Optimizing electrode arrangement in plasma actuators: a study on induced velocity and efficiency

Optimizing electrode arrangement in plasma actuators: a study on induced velocity and efficiency

Surface-charge control strategy for enhanced electrohydrodynamic force in dielectric barrier discharge plasma actuators

Experimental demonstration of low-voltage operated dielectric barrier discharge plasma actuators using SiC MOSFETs

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