An efficient algorithm for corona simulation with complex chemical models

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

doi:10.1016/j.jcp.2017.02.038

Cited by 16 publications

(14 citation statements)

References 43 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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“…If one adds the fact that the time-scales associated with charge creation and electro-drift can be very different, one realizes that the dynamics of corona, (e.g. associated with so-called streamers), is even more challenging [3][4][5][6][7][8][9]. Furthermore the detailed physics of the modeling associated with the various non-stationary aspects of corona render its comparison with experimental results (e.g.…”

Section: Introduction and Contextmentioning

confidence: 99%

“…Nevertheless, in many problems a similar partitioned strategy is known to be less stable than a monolithic one. Monolithic fully-coupled approaches have also indeed been pursued to numerically compute the non-linear elliptic/hyperbolic problem associated with electric potential, electrons, ions charge creations, electro-drift and secondary photo-ionization (Cf [38,39] among others). These monolithic fully-coupled approaches might be interesting in order to get physically detailed, chemical composition of corona [39].…”

Section: Introduction and Contextmentioning

confidence: 99%

“…Monolithic fully-coupled approaches have also indeed been pursued to numerically compute the non-linear elliptic/hyperbolic problem associated with electric potential, electrons, ions charge creations, electro-drift and secondary photo-ionization (Cf [38,39] among others). These monolithic fully-coupled approaches might be interesting in order to get physically detailed, chemical composition of corona [39]. They have been mainly applied to very simple corona geometries, since the numerical complexity of the complete physics is difficult to address in complex domains.…”

Section: Introduction and Contextmentioning

confidence: 99%

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Multi-scale two-domain numerical modeling of stationary positive DC corona discharge/drift-region coupling

Monrolin

Plouraboué

2021

Journal of Computational Physics

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“…These two requirements are mandatory to create a complete diagnostic instrument for high-power electric devices since the above cited bandwidth covers both normal operation modes and abnormal events such as partial discharges 1-3 and corona emission. [4][5][6] The main novelty of this work is the adoption of an anisotropic electro-optic crystal to fulfill the above-mentioned requests.…”

Section: Introductionmentioning

confidence: 99%

A sensor for vector electric field measurements through a nonlinear anisotropic optical crystal

Barbieri

Gondola

Potenza

et al. 2017

Review of Scientific Instruments

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Electrical applications require the development of electric field sensors that can reproduce vector electric field waveforms with a very large spectral width ranging from 50 Hz to at least 70 MHz. This makes it possible to measure both the normal operation modes of electrical components and abnormal behaviors such as the corona emission and partial discharges. In this work, we aim to develop a fully dielectric sensor capable of measuring two components of the electric field using a wide class of optical crystals including anisotropic ones, whereas most of the efforts in this field have been devoted to isotropic crystals. We report the results of the measurements performed at 50 Hz and with a lightning impulse, to validate the sensor.

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An efficient algorithm for corona simulation with complex chemical models

Cited by 16 publications

References 43 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

Multi-scale two-domain numerical modeling of stationary positive DC corona discharge/drift-region coupling

A sensor for vector electric field measurements through a nonlinear anisotropic optical crystal

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