Numerical simulation of coaxial–coplanar dielectric-barrier discharge in atmospheric helium
A self-consistent two-dimensional fluid model is employed to investigate the coaxial–coplanar dielectric-barrier discharge (DBD) excited by the sinusoidal voltage in atmospheric helium. Simulation results show that there are two current pulses in the positive half cycle, but only one in the negative...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2022-05-01
|
| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0089080 |
| _version_ | 1811249383223590912 |
|---|---|
| author | Shuang Ran Jing Wang Bingying Lei Simeng Liu Jing Li Yishan Wang Wei Zhao Yixiang Duan Jie Tang |
| author_facet | Shuang Ran Jing Wang Bingying Lei Simeng Liu Jing Li Yishan Wang Wei Zhao Yixiang Duan Jie Tang |
| author_sort | Shuang Ran |
| collection | DOAJ |
| description | A self-consistent two-dimensional fluid model is employed to investigate the coaxial–coplanar dielectric-barrier discharge (DBD) excited by the sinusoidal voltage in atmospheric helium. Simulation results show that there are two current pulses in the positive half cycle, but only one in the negative half cycle. The discharge is transformed from the Townsend-like mode, through the glow-like mode, and back to the Townsend-like mode in both the positive and negative half cycles, during which the electric field line exhibits an arc-shape profile due to the configuration of coaxial–coplanar electrodes. In the glow-like mode, the cathode fall is located near the inner edge of the ground electrode at the first positive current peak, but close to the outer edge of the ground electrode at the second positive current peak. At the negative current peak, the cathode fall is distributed near the outer edge of the high voltage electrode. Since the instantaneous anode and the instantaneous cathode are on the same side of the discharge space, the dielectric layer is simultaneously covered by positive and negative surface charges due to the movement of charged particles. It is also found that the surface charge density changes significantly on the dielectric layer facing the electrodes. A further study reveals that a stronger discharge always occurs in the central circular area and an alternately complementary discharge takes place in the periphery ring area in the positive half cycle due to the activator–inhibitor effect. This feature is helpful for producing uniform plasma in a whole cycle of DBD. |
| first_indexed | 2024-04-12T15:45:34Z |
| format | Article |
| id | doaj.art-867c4c125ab544d2aa078e7c3e8cee2e |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-12T15:45:34Z |
| publishDate | 2022-05-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-867c4c125ab544d2aa078e7c3e8cee2e2022-12-22T03:26:40ZengAIP Publishing LLCAIP Advances2158-32262022-05-01125055209055209-1210.1063/5.0089080Numerical simulation of coaxial–coplanar dielectric-barrier discharge in atmospheric heliumShuang Ran0Jing Wang1Bingying Lei2Simeng Liu3Jing Li4Yishan Wang5Wei Zhao6Yixiang Duan7Jie Tang8State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an 710119, ChinaState Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an 710119, ChinaState Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an 710119, ChinaState Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an 710119, ChinaFaculty of Mathematics and Physics, Huaiyin Institute of Technology, Huaian 223003, ChinaState Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an 710119, ChinaState Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an 710119, ChinaKey Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, ChinaState Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an 710119, ChinaA self-consistent two-dimensional fluid model is employed to investigate the coaxial–coplanar dielectric-barrier discharge (DBD) excited by the sinusoidal voltage in atmospheric helium. Simulation results show that there are two current pulses in the positive half cycle, but only one in the negative half cycle. The discharge is transformed from the Townsend-like mode, through the glow-like mode, and back to the Townsend-like mode in both the positive and negative half cycles, during which the electric field line exhibits an arc-shape profile due to the configuration of coaxial–coplanar electrodes. In the glow-like mode, the cathode fall is located near the inner edge of the ground electrode at the first positive current peak, but close to the outer edge of the ground electrode at the second positive current peak. At the negative current peak, the cathode fall is distributed near the outer edge of the high voltage electrode. Since the instantaneous anode and the instantaneous cathode are on the same side of the discharge space, the dielectric layer is simultaneously covered by positive and negative surface charges due to the movement of charged particles. It is also found that the surface charge density changes significantly on the dielectric layer facing the electrodes. A further study reveals that a stronger discharge always occurs in the central circular area and an alternately complementary discharge takes place in the periphery ring area in the positive half cycle due to the activator–inhibitor effect. This feature is helpful for producing uniform plasma in a whole cycle of DBD.http://dx.doi.org/10.1063/5.0089080 |
| spellingShingle | Shuang Ran Jing Wang Bingying Lei Simeng Liu Jing Li Yishan Wang Wei Zhao Yixiang Duan Jie Tang Numerical simulation of coaxial–coplanar dielectric-barrier discharge in atmospheric helium AIP Advances |
| title | Numerical simulation of coaxial–coplanar dielectric-barrier discharge in atmospheric helium |
| title_full | Numerical simulation of coaxial–coplanar dielectric-barrier discharge in atmospheric helium |
| title_fullStr | Numerical simulation of coaxial–coplanar dielectric-barrier discharge in atmospheric helium |
| title_full_unstemmed | Numerical simulation of coaxial–coplanar dielectric-barrier discharge in atmospheric helium |
| title_short | Numerical simulation of coaxial–coplanar dielectric-barrier discharge in atmospheric helium |
| title_sort | numerical simulation of coaxial coplanar dielectric barrier discharge in atmospheric helium |
| url | http://dx.doi.org/10.1063/5.0089080 |
| work_keys_str_mv | AT shuangran numericalsimulationofcoaxialcoplanardielectricbarrierdischargeinatmospherichelium AT jingwang numericalsimulationofcoaxialcoplanardielectricbarrierdischargeinatmospherichelium AT bingyinglei numericalsimulationofcoaxialcoplanardielectricbarrierdischargeinatmospherichelium AT simengliu numericalsimulationofcoaxialcoplanardielectricbarrierdischargeinatmospherichelium AT jingli numericalsimulationofcoaxialcoplanardielectricbarrierdischargeinatmospherichelium AT yishanwang numericalsimulationofcoaxialcoplanardielectricbarrierdischargeinatmospherichelium AT weizhao numericalsimulationofcoaxialcoplanardielectricbarrierdischargeinatmospherichelium AT yixiangduan numericalsimulationofcoaxialcoplanardielectricbarrierdischargeinatmospherichelium AT jietang numericalsimulationofcoaxialcoplanardielectricbarrierdischargeinatmospherichelium |