Effect of a thin-wire exposed electrode on plasma structure and aerodynamic performance in a DBD plasma actuator

Mangina, Rao S.; Enloe, Lon; Bliely, Matthew; Cook, Richard J.

doi:10.2514/6.2015-1730

Cited by 7 publications

(1 citation statement)

References 25 publications

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“…However, in recent years, SDBD has been finding more and more applications outside ozone generation, such as thrust generation [22][23][24][25][26][27], EHD (electrohydrodynamic) airflow generation [28][29][30] and flow modification [31][32][33], as well as air and water purification [34][35][36][37][38]. Yet, the toxicity of the ozone generated by the SDBD discharge may be an obstacle to the implementation of SDBD in some applications, especially if the discharge is to work in an enclosed room where people are present [39].…”

Section: Introductionmentioning

confidence: 99%

Ozone Generation by Surface Dielectric Barrier Discharge

et al. 2023

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Surface dielectric barrier discharge (SDBD) is used in a variety of different applications; however, the ozone generated in the discharge can be toxic to people in the vicinity. In this paper, we study the SDBD (using generators with smooth-edge, serrated and thin-wire high-voltage electrodes) in terms of ozone generation. The electrical measurements and the time-resolved plasma imaging revealed differences in the discharge current, dissipated power and plasma morphology for the different types of SDBD generators and showed significant suppression of the streamer formation from the thin-wire electrode. We determined the amount of ozone produced by each generator and found that despite the observed differences in discharge between the generators, the ozone production yield and the maximum volumetric concentration of ozone for all three generators is a linear function of only one parameter—the discharge active power. We also found that the ozone production efficiency of 9.66 g/kWh is constant for all three generators. Our results show that SDBD generators can be safely used in the enclosed space if the SDBD discharge operates with relatively low active power (the SDBD generator working with the active power of 1.7 W did not exceed the ozone concentration of 0.1 ppm in the 60 m3 room).

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Section: Introductionmentioning

confidence: 99%

Ozone Generation by Surface Dielectric Barrier Discharge

et al. 2023

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Influence of the air-exposed active electrode shape on the electrical, optical and mechanical characteristics of a surface dielectric barrier discharge plasma actuator

Moreau

Cazour²,

Bénard

2018

Journal of Electrostatics

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The effect of the voltage waveform on performance of dielectric barrier discharge plasma actuator

Nakano

Nishida

2019

Journal of Applied Physics

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Improving the performance of a dielectric barrier discharge plasma actuator (DBDPA) is required to further its practical use. In this study, the effects on DBDPA performance by the AC voltage waveform are experimentally investigated. For this purpose, we performed thrust measurements, consumption power measurements, and body force analysis using particle-image-velocimetry. Observations obtained using the basic symmetric waveforms yielded that changing the voltage gradient (dV/dt) like a sinusoidal waveform is effective to produce a strong body force with low consumption power. Therefore, we firstly propose the waveforms systematically composed of combinations of steep and gradual voltage slopes. In the investigation about proposed waveforms, we found that the negative steep-gradual voltage profile is effective for strong thrust induction, that is, the steep slope results in strong body force generation by a strong discharge, and the gradual slope maintains that body force. On the other hand, the effective positive-going voltage profile is different depending on the negative voltage profile. The positive steep-gradual profile works to induce body force with the same mechanism as the negative one, while the gradual-steep profile maintains the body force generated in the last negative-going voltage period and enhances the body force generated in the forthcoming negative-going voltage period. However, a positive-going voltage period itself generates only a weak body force independent from the voltage profiles. From the investigation, we found that a combination of the steep-gradual profile in both the negative- and positive-going voltage periods provides the strongest thrust generation. In addition, we further optimized the voltage waveform by changing the proportion of the negative-going voltage period in one AC cycle. We found that a waveform with a 70% negative-going voltage period achieves more than 40% stronger thrust and 20% higher efficiency than those of the sinusoidal waveform. Also, the waveform with an 80% negative-going voltage period yields over 35% stronger thrust with the highest efficiency, 25% higher than the sinusoidal waveform.

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Effect of a thin-wire exposed electrode on plasma structure and aerodynamic performance in a DBD plasma actuator

Cited by 7 publications

References 25 publications

Ozone Generation by Surface Dielectric Barrier Discharge

Ozone Generation by Surface Dielectric Barrier Discharge

Influence of the air-exposed active electrode shape on the electrical, optical and mechanical characteristics of a surface dielectric barrier discharge plasma actuator

The effect of the voltage waveform on performance of dielectric barrier discharge plasma actuator

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