Computational study of capacitively coupled high-pressure glow discharges in helium

Yuan, Xiaoqin; Raja, Laxminarayan L.

doi:10.1109/tps.2003.815479

Cited by 296 publications

(129 citation statements)

References 36 publications

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“…12 Subscripts i; e represent the ions and electrons, respectively. S denotes the source term accounting for loss and creation.…”

Section: Modelmentioning

confidence: 99%

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

Wang

2012

Physics of Plasmas

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Asymmetric current pulses in dielectric-barrier atmospheric-pressure glow discharges are investigated by a self-consistent, one-dimensional fluid model. It is found that the glow mode and Townsend mode can coexist in the asymmetric discharge even though the gas gap is rather large. The reason for this phenomenon is that the residual space charge plays the role of anode and reduces the gap width, resulting in the formation of a Townsend discharge.

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“…12 Subscripts i; e represent the ions and electrons, respectively. S denotes the source term accounting for loss and creation.…”

Section: Modelmentioning

confidence: 99%

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

Wang

2012

Physics of Plasmas

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“…Electron temperature is included in the developed model in order to accurately describe the air glow discharge. The complete equation for electron energy conservation can be noted as 20) 3 2 @ðk B n e T e Þ @t þ r 5 2 k B T e À e À 5 2 k B n e D e rT e ¼ j e Á E À n e X k n k k À 2n e k B m e M k ðT e À T Þv e;n ; ð3Þ…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical Simulation of Direct Current Glow Discharge in Air with Experimental Validation

Liu

Yang

et al. 2012

Jpn. J. Appl. Phys.

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An improved self-consistent, multicomponent, and two-dimensional plasma model for simulating low-pressure air glow discharge is presented. In the model, both the plasma hydrodynamics model and chemical model are considered, which include 12 species and 27 reactions. The discharge voltage-current characteristics and spatial profiles of electron temperature predicted by the model are in good agreement with experimental measurements. On the basis of the validated model, the characteristics of plasma evolution are investigated in detail. The simulation results show that the electron impact ionization reaction of N 2 shows the highest rate for electron production. N 2 þ and O 2 þ are the dominant positive ions, and N 2 þ is smaller in amount on density than O 2 þ at about one order of magnitude. The production rate of N 2 þ is greater than that of O 2 þ in the entire discharge process. This indicates that the positive ions and electrons play a prominent role in determining the characteristics of plasma. With time progresses, the conductive current density increases at the cathode, but decreases at the anode. Moreover, the conductive current density at the cathode is much smaller than that at the anode. It is shown that the presented developed plasma model can provide valuable insights into the physical mechanisms of low-pressure air glow discharge, and suggests ways to optimize practical engineering.

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“…35͒ and so, they are not in equilibrium with the local electric field for a substantial part of the sheath region. 35,36 This shortcoming of the hydrodynamic model was recently highlighted for dc APGD. 36 Given that sheath characteristics and electron kinetics are key factors in determining both plasma chemistry and plasma stability, it is important to accurately describe electron kinetics particularly in the sheath region.…”

Section: Electrical Coronas: New Aspects and Applicationsmentioning

confidence: 99%

Effect of configuration and dimensions of reactor electrodes on electrical and optical corona discharge characteristics

2010

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An experimental parametric study is made to investigate how the electrical corona discharge characteristics are influenced by the geometrical configuration and dimensions of the reactor and the electrode polarity of the applied voltage. Furthermore, features of the corona discharge plasma formed around the stressed electrode in some different gases are recorded photographically to provide more information on the physical mechanisms of the corona discharge in the investigated gases. The obtained results have been discussed in the light of gas discharge physics and its applications.

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Computational study of capacitively coupled high-pressure glow discharges in helium

Cited by 296 publications

References 36 publications

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

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

Numerical Simulation of Direct Current Glow Discharge in Air with Experimental Validation

Effect of configuration and dimensions of reactor electrodes on electrical and optical corona discharge characteristics

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