Nanosecond Repetitively Pulsed Dielectric Barrier Discharge in Air at Atmospheric Pressure

Shao, Tao; Zhang, Cheng; Niu, Zheng; Yu, Yang; Yan, Ping; Zhou, Yuanxiang

doi:10.1088/1009-0630/13/5/15

Cited by 22 publications

(10 citation statements)

References 24 publications

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“…Specifically, a higher voltage amplitude will result in a higher concentration of plasma active particles. This should be attributed to the rise in degree of ionization by increasing the voltage in a certain range [26]. As for the peak value of the density of every particle in figure 3: the peak values of atom H, O, and electron of Case 3 are about 10.8, 4.3, and 4.5 times that of Case 1, respectively.…”

Section: Resultsmentioning

confidence: 86%

“…equivalence ratio, mixture ratio) [23,24], pressure and temperature [12,22,25] were studied in related PAC experiments. While in the aspect of discharge operating variables, mainly the power type [26,27], amplitude of actuating voltage [28,29], discharge gap size [24], and actuating frequency [20,30] were analyzed. As one of the series studies, the influence of equivalence ratio on plasma assisted detonation initiation (PADI) has been studied in our preceding work [31], which showed that lowering the equivalence ratio will have an adverse effect on the benefits of plasma.…”

Section: Introductionmentioning

confidence: 99%

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Effect of actuating voltage and discharge gap on plasma assisted detonation initiation process

Zhou

Che

Nie

et al. 2018

Plasma Sci. Technol.

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The influence of actuating voltage and discharge gap on plasma assisted detonation initiation by alternating current dielectric barrier discharge was studied in detail. A loose coupling method was used to simulate the detonation initiation process of a hydrogen-oxygen mixture in a detonation tube under different actuating voltage amplitudes and discharge gap sizes. Both the discharge products and the detonation forming process assisted by the plasma were analyzed. It was found that the patterns of the temporal and spatial distributions of discharge products in one cycle keep unchanged as changing the two discharge operating parameters. However, the adoption of a higher actuating voltage leads to a higher active species concentration within the discharge zone, and atom H is the most sensitive to the variations of the actuating voltage amplitude among the given species. Adopting a larger discharge gap results in a lower concentration of the active species, and all species have the same sensitivity to the variations of the gap. With respect to the reaction flow of the detonation tube, the corresponding deflagration to detonation transition (DDT) time and distance become slightly longer when a higher actuating voltage is chosen. The acceleration effect of plasma is more prominent with a smaller discharge gap, and the benefit builds gradually throughout the DDT process. Generally, these two control parameters have little effect on the amplitude of the flow field parameters, and they do not alter the combustion degree within the reaction zone.

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Section: Resultsmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Effect of actuating voltage and discharge gap on plasma assisted detonation initiation process

Zhou

Che

Nie

et al. 2018

Plasma Sci. Technol.

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“…When the distance from the air gap increased to 4 mm, the discharge turned into an obvious filament-like discharge. He also compared single nanosecond pulse data, repeated nanosecond pulse data, and traditional Paschen curve [18,[25][26][27][28]. Lieberman developed a global model (volume-averaged) for argon and chlorine to investigate high-density, low-pressure electropositive and electronegative discharges under continuous wave and pulsed power excitation [29].…”

Section: Introductionmentioning

confidence: 99%

Influence of pulse width on the breakdown process of nanosecond pulse discharge at low pressure

Wang

et al. 2023

J. Phys. D: Appl. Phys.

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The pulse plasma discharge breakdown is a longstanding research topic in plasma physics, yet the formation process remains elusive. In this study, we investigate the breakdown process under nanosecond pulses with different pulse widths (1 ns, 10 ns, and 100 ns), utilizing the 1D implicit Particle-in-Cell/Monte Carlo collision (PIC/MCC) method. Our simulation results indicate that pulse width plays a crucial role in the evolution of plasma breakdown. Specifically, under 1 ns pulses, the breakdown occurs after the pulse voltage ceases, demonstrating that increasing pulse width accelerates the changes in plasma parameters but does not affect the breakdown time. Under 10 ns pulses, the removal of voltage leads to a significant increase in anode sheath thickness. Under 100 ns pulse, the ions collide in the cathode sheath after the pulse ends, resulting in ion energy loss. Finally, by scanning the parameter space, we give the Paschen curve and observe higher breakdown voltage in the pulse case and the impact of ion secondary electrons.

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“…[6][7][8][9][10][11] Except for the relatively early studies on the basic theory of PAC by DBD, most of the researches focus on the influences of discharge environmental parameters, such as the types of discharge gas, [7,12] gas flow rate, [13] ratio of fuel to oxidizer (e.g., equivalence ratio, mixture ratio), [14,15] pressure and temperature, [9,12,16] on the discharge plasma and combustion control. However, in the aspect of discharge operating parameters, especially the actuating frequency of an alternating current-dielectric barrier discharge (AC-DBD), [17,18] the relevant researches are still quite insufficient compared with the discharge environmental parameters. As one of the advantages of PAC, an active adjustment can be made easily through changing the discharge actuating frequency to realize an optimal effect on combustion control according to the practical situation.…”

Section: Introductionmentioning

confidence: 99%

Effect of actuating frequency on plasma assisted detonation initiation

Zhou¹,

Che²,

Wang³

et al. 2018

Chinese Phys. B

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Aiming at studying the influence of actuating frequency on plasma assisted detonation initiation by alternating current dielectric barrier discharge, a loosely coupled method is used to simulate the detonation initiation process of a hydrogenoxygen mixture in a detonation tube at different actuating frequencies. Both the discharge products and the detonation forming process which is assisted by the plasma are analyzed. It is found that the patterns of the temporal and spatial distributions of discharge products in one cycle are not changed by the actuating frequency. However, the concentration of every species decreases as the actuating frequency rises, and atom O is the most sensitive to this variation, which is related to the decrease of discharge power. With respect to the reaction flow of the detonation tube, the deflagration-todetonation transition (DDT) time and distance both increase as the actuating frequency rises, but the degree of effect on DDT development during flow field evolution is erratic. Generally, the actuating frequency affects none of the amplitude value of the pressure, temperature, species concentration of the flow field, and the combustion degree within the reaction zone.

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Nanosecond Repetitively Pulsed Dielectric Barrier Discharge in Air at Atmospheric Pressure

Cited by 22 publications

References 24 publications

Effect of actuating voltage and discharge gap on plasma assisted detonation initiation process

Effect of actuating voltage and discharge gap on plasma assisted detonation initiation process

Influence of pulse width on the breakdown process of nanosecond pulse discharge at low pressure

Effect of actuating frequency on plasma assisted detonation initiation

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