Modeling of asymmetric pulsed phenomena in dielectric-barrier atmospheric-pressure glow discharges

Ha, Yan; Wang, Huijuan; Wang, Xiaofei

doi:10.1063/1.3676628

Cited by 28 publications

(15 citation statements)

References 14 publications

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“…Our group has also made some effort on this aspect. According to our previous works, the SP1-AP1 transition in shorter gaps might be attributed to the discordance of the evolutionary paces between electrons and ions [16], while, in longer gaps, the rise in seed electron level induced by the electron backflow is the main reason for the generation of AP1 discharge [17], and the traditional explanations such as "residual positive column" [7] or "instantaneous anode" [18] in essence are special forms of the "electron backflow region". Furthermore, we also proposed a preliminary state-controlling method which can adjust the discharge mode from AP1 to SP1 by applying a first-peak-leveled driving voltage from the beginning of the discharge [19].…”

Section: Introductionmentioning

confidence: 99%

A Practical Method for Controlling the Asymmetric Mode of Atmospheric Dielectric Barrier Discharges

et al. 2020

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Atmospheric pressure dielectric barrier discharges (DBDs) have been applied in a very broad range of industries due to their outstanding advantages. However, different discharge modes can influence the stability of atmospheric DBDs, such as the density and composition of active species in discharge plasmas, thereby impacting the effect of related applications. It is necessary and valuable to investigate the control of nonlinear modes both in theoretical and practical aspects. In this paper, we propose a practical, state-controlling method to switch the discharge mode from asymmetry to symmetry through changing frequencies of the applied voltage. The simulation results show that changing frequencies can effectively alter the seed electron level at the beginning of the breakdown and then influence the subsequent discharge mode. The higher controlling frequency is recommended since it can limit the dissipative process of residual electrons and is in favor of the formation of symmetric discharge in the after-controlling section. Under our simulation conditions, the discharges with an initial driving frequency of 14 kHz can always be converted to the symmetric period-one mode when the controlling frequency is beyond 30 kHz.

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Section: Introductionmentioning

confidence: 99%

A Practical Method for Controlling the Asymmetric Mode of Atmospheric Dielectric Barrier Discharges

et al. 2020

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“…模式的转变, 常见的情形是汤森模式与辉光放电模式之间的转换 [27,[30][31][32][33][34] . 2012年, Ha等人 [30] [33][34][35][36][37][38][39] 条件下实现的, 例如: 脉冲调制的射频电压 [33] 、亚微秒脉冲型电压 [34][35][36] 、锯齿电压 [37] 、光滑梯形电压 [38] 和射频脉冲与梯形脉冲结合电压 [39] 等, 这些研究结果都表明了它们的放电特性完全不同于正弦电压激发放电的特性. 在利用锯齿型电压 [37] 激发大气压DBD放电中, 模拟研究发现每半个外加电压周期中出现一个阶梯型放电, 并分析了占空比对放电的影响.…”

Section: 射的作用与此同时大气压Dbd中也经常出现放电unclassified

Characterization and mechanism studies of argon dielectric barrier discharge excited by a Gaussian voltage at atmospheric pressure

Xu¹,

Zhu²,

Tang³

et al. 2016

Sci. Sin.-Phys. Mech. Astron.

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A one-dimensional self-consistent fluid model is employed to investigate the atmospheric-pressure argon dielectric-barrier discharge (DBD) excited by periodic Gaussian voltage. With the driving frequency, voltage amplitude, and gas gap set at certain values, the temporal evolutions of discharge current density and gas voltage are obtained, together with the spatial distributions of electron and ion densities and electric field. Simulation results indicate that there are two discharge modes: Townsend and glow modes in the multi-current pulse discharge. A mutual transition between the Townsend mode and glow one occurs during each half cycle of the applied Gaussian voltage. The space charges in the gas gap and the surface charges on the dielectrics play a key role in the transition between the two discharge modes. Additionally, a residual current peak is observed during the falling phase of each half cycle. This is resulted from the fact that amounts of space charges are trapped in the gas gap during the rising phase of the applied Gaussian voltage. These findings contribute much to the design of plasma excitation source in applications, such as materials processing, pollution control, and biomedical sterilization. dielectric barrier discharge, Gaussian voltage, multi-current pulse, mode transition

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“…[6][7][8][9] Occasionally, under certain conditions, the single period discharge may display an asymmetric discharge mode with different positive and negative current pulses. [10][11][12] Recently, more complex temporal nonlinear behaviors of APGD, such as period-doubling bifurcation and chaos, have been frequently observed in both experiments and numerical simulations. [13][14][15][16][17][18][19] Different from the single period discharge, the current pulses in period-doubling and chaos discharges repeat at multiple applied voltage cycles or fluctuate stochastically.…”

Section: Introductionmentioning

confidence: 99%

The transition mechanism from a symmetric single period discharge to a period-doubling discharge in atmospheric helium dielectric-barrier discharge

Zhang

Wang

2013

Physics of Plasmas

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Period-doubling and chaos phenomenon have been frequently observed in atmospheric-pressure dielectric-barrier discharges. However, how a normal single period discharge bifurcates into period-doubling state is still unclear. In this paper, by changing the driving frequency, we study numerically the transition mechanisms from a normal single period discharge to a period-doubling state using a one-dimensional self-consistent fluid model. The results show that before a discharge bifurcates into a period-doubling state, it first deviates from its normal operation and transforms into an asymmetric single period discharge mode. Then the weaker discharge in this asymmetric discharge will be enhanced gradually with increasing of the frequency until it makes the subsequent discharge weaken and results in the discharge entering a period-doubling state. In the whole transition process, the spatial distribution of the charged particle density and the electric field plays a definitive role. The conclusions are further confirmed by changing the gap width and the amplitude of the applied voltage. V C 2013 AIP Publishing LLC.

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Modeling of asymmetric pulsed phenomena in dielectric-barrier atmospheric-pressure glow discharges

Cited by 28 publications

References 14 publications

A Practical Method for Controlling the Asymmetric Mode of Atmospheric Dielectric Barrier Discharges

A Practical Method for Controlling the Asymmetric Mode of Atmospheric Dielectric Barrier Discharges

Characterization and mechanism studies of argon dielectric barrier discharge excited by a Gaussian voltage at atmospheric pressure

The transition mechanism from a symmetric single period discharge to a period-doubling discharge in atmospheric helium dielectric-barrier discharge

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