An implicit three-dimensional fractional step method for the simulation of the corona phenomenon

Villa, Andrea; Barbieri, Luca; Gondola, Marco; Leon-Garzon, Andres R.; Malgesini, Roberto

doi:10.1016/j.amc.2017.04.037

Cited by 11 publications

(5 citation statements)

References 35 publications

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“…We have developed a simulation of the experimental setup in Figure 1 for a discharge under air atmosphere. The model is based on numerical techniques previously developed for the simulation of corona discharges [59,60,61,62,63]. The model is based on a set of partial differential equations for the evolution of the concentrations of charged and neutral species coupled with the electrostatic equation.…”

Section: Resultsmentioning

confidence: 99%

Experimental Characterization of Polymer Surfaces Subject to Corona Discharges in Controlled Atmospheres

et al. 2019

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Polymeric dielectrics are employed extensively in the power transmission industry, thanks to their excellent properties; however, under normal operating conditions these materials tend to degrade and fail. In this study, samples of low-density polyethylene, polypropylene, polymethyl methacrylate, and polytetrafluorethylene were subjected to corona discharges under nitrogen and air atmospheres. The discharges introduced structural modifications over the polymer surface. From a chemical perspective, the alterations are analogous among the non-fluorinated polymers (i.e., polyethylene (PE), polypropylene (PP), and polymethyl methacrylate (PMMA)). A simulation of the corona discharge allowed the identification of highly reactive species in the proximity of the surface. The results are consistent with the degradation of insulating polymers in high-voltage applications due to internal partial discharges that ultimately lead to the breakdown of the material.

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Section: Resultsmentioning

confidence: 99%

Experimental Characterization of Polymer Surfaces Subject to Corona Discharges in Controlled Atmospheres

et al. 2019

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Section: Adaptive Strategies In the Fast Multipole Methodsmentioning

confidence: 99%

“…The third approach is applied to the algorithm of the fast multipole method to skip some calculation of ỹj ∈ N ðBÞ in (16). After accumulating ỹj ∈ F ðBÞ, ỹj ∈ B and those ỹj located in the boxes directly adjacent to B, we get an estimate of the magnitude of S ph xi ð Þ in (16). If the ratio of the remaining I h ðỹ j Þ to the estimated S ph xi ð Þ is less than a prescribed number r s , we skip these I h ðỹ j Þ in the summation.…”

Section: Adaptive Strategies In the Fast Multipole Methodsmentioning

confidence: 99%

“…As a product of streamer discharges, the non-thermal atmospheric plasma paves the way to a large number of chemical reactions in applications such as the pollution control [10], solubilisation of carbon nano-material [11,12] and disinfection [13,14]. Therefore, streamer discharges draw continuous research interests during the last several decades [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Adaptive strategies to fast multipole method in photoionisation calculations for streamer discharges

Lin

Zhuang

2022

High Voltage

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Recently, a new framework to compute the photoionisation rate in streamer discharges accurately and efficiently using the integral model and the fast multipole method (FMM) was presented. This paper further improves the efficiency of this framework with adaptive strategies. The adaptive strategies are based on the magnitude of radiation and the electric field during the streamer propagation, and are applied to the selection of the source and target points. The accuracy and efficiency of this adaptive FMM are studied quantitatively for different domain sizes, pressures and adaptive criteria, in comparison with some existing efficient approaches to compute the photoionisation. It is shown that appropriate adaptive strategies reduce the calculation time of the FMM greatly, and maintain the high accuracy that the numerical error is still much smaller than other methods based on partial differential equations. The performance of the proposed adaptive method is also studied for a three-dimensional positive streamer interacting problem with a plasma cloud, which shows that the FMM with proper adaptive strategies is even faster than the partial differential equation based methods with efficient boundary conditions for the ionisation calculation.

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“…We have also complemented our analysis by using some parametrized discharge simulations using the techniques described in Refs. [12,[26][27][28]. This allows to estimate also a lower bound for the work function.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure of defected polyethylene for Schottky emission

Buccella

Ceresoli²,

Villa

et al. 2021

Materials Chemistry and Physics

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An implicit three-dimensional fractional step method for the simulation of the corona phenomenon

Cited by 11 publications

References 35 publications

Experimental Characterization of Polymer Surfaces Subject to Corona Discharges in Controlled Atmospheres

Experimental Characterization of Polymer Surfaces Subject to Corona Discharges in Controlled Atmospheres

Adaptive strategies to fast multipole method in photoionisation calculations for streamer discharges

Electronic structure of defected polyethylene for Schottky emission

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