Numerical simulation of back discharge: Influence of pinhole geometry on the regime transitions |
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| Institution: | 1. Commissariat à l’énergie atomique et aux énergies alternatives, Centre de Marcoule, BP 17171, 30207 Bagnols-sur-Cèze Cedex, France;2. Université de Pau et de Pays de l’Adour, Laboratoire SIAME, Avenue de l’Université, BP 1155, 64 013 Pau Cedex, France;1. Lightning Research Group, Division of Electricity, Ångström Laboratory, Uppsala University, Box 534, SE-75121 Uppsala, Sweden;2. ABB Power Systems HVDC, SE-77180 Ludvika, Sweden;1. Thunderstorm Systems and Data Division, Vaisala Inc., Louisville, CO, USA;2. Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, USA;1. Electrical and Computer Engineering Post-Graduation Course (PPGEE), Institute of Technology (ITEC), Federal University of Para (UFPA), Belem 66075-110, Para, Brazil;2. Federal University of Santa Catarina (UFSC), Brazil |
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| Abstract: | This paper presents numerical simulation of back discharge activity that is modelled at a pinhole in a dielectric layer on plane anode. First, for a given pinhole geometry, the transitions between back discharge regimes have been depicted as a mode diagram. Then, we have studied the influence of the dielectric layer thickness on the regime transitions. We have shown that increase in the layer thickness (within range of 0.02–0.2 mm) promotes the back discharge development. Finally, we have studied the influence of ‘crater configuration’. We have shown that ‘crater shape’ favours the back discharge ignition, whereas limits the resulting discharge development. |
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| Keywords: | Atmospheric-pressure plasma Back discharge Numerical simulation Regime transitions |
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