Automated Fluid Model Generation and Numerical Analysis of Dielectric Barrier Discharges Using Comsol

Jovanović, Aleksandar P.; Stankov, Marjan N.; Loffhagen, Detlef; Becker, Markus M.

doi:10.1109/tps.2021.3120507

Cited by 11 publications

(16 citation statements)

References 32 publications

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“…Results from StrAFE compare well to all other codes, and is well within the expected margin of error considering the many potential differences in implementation [50]. The results from StrAFE were found to resemble most closely those from group DE, whose computation was performed using the commercially available COMSOL Multiphysics [19] software. With a runtime of around four hours for the present code, and considering imperfect parallel scaling (see Appendix B), StrAFE compares well with this widely-used commercial option.…”

Section: A Axisymmetric Positive Streamersupporting

confidence: 62%

“…In StrAFE, the option exists to have either a Neumann-zero condition, or wall conditions following Hagelaar et al [47]. Using similar notation to Jovanovic et al [19], these are given by:…”

Section: F Boundary Conditionsmentioning

confidence: 99%

“…• Wall() -Defines nodes on the mesh which are to be marked as a wall. Doing so allows the application of the wall conditions according to ( 17)- (19). This class stores the attributes of the wall, such as reflection and secondary emission properties.…”

Section: A Basic Usage and Classesmentioning

confidence: 99%

“…Currently, the software developed must typically strike a balance between issues such as computational speed, resource usage, accessibility, adaptability, accuracy, and model fidelity. Further difficulty comes with the sheer number of necessary parameters involved within plasma simulations, much of which must be manually entered into simulation software, a process which is highly susceptible to human error [19]. Generally, custom modifications to complex, often low-level, code are required when setting up new problems, which can be time consuming, and, in many cases, require some degree of computational expertise.…”

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confidence: 99%

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The Design of a Python Library for the Automatic Definition and Simulation of Transient Ionization Fronts

et al. 2023

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In recent years, the interest in nonthermal plasma dynamics has grown significantly, within both industry and research. This has been driven by the development of several novel cold plasma technologies across a wide range of different fields, for example, for plasma medicine, chemical processing, pollution control, and surface treatment. The optimization of these technologies relies heavily upon the understanding of gas discharge plasmas: their generation, electrical characteristics, and interaction with their surroundings. Moreover, the manifestation of nonthermal plasmas in the form of streamers is of high relevance and critical importance to high voltage insulation technology, and has further significance to geophysical research concerning atmospheric discharges. The present work describes the development of the StrAFE (Streamers on Adaptive Finite Elements) package, a dedicated Python library built atop the popular open-source FEniCS finite element software, designed with the objective to simplify and to automate the solution of ionization front models. The library features support for mesh adaptivity, distributed memory parallelism, and an intuitive programming interface, while providing an exceptionally high level of user configurability. This article presents the software implementation, describes its features, and presents several code verification studies performed within simple and complex domains. It is concluded that the numerical results gained from this open-source framework are comparable to other well-established software in terms of accuracy. Therefore, it further demonstrates the great potential for open-source software to make significant contributions to technologies involving nonthermal plasmas, ionization fronts, and gas discharges. INDEX TERMSNonthermal plasma, gas discharge plasma, finite element analysis, open-source software, streamer discharge, high voltage phenomena, transient ionization fronts NOMENCLATURE A. FINITE ELEMENT METHOD

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Section: A Axisymmetric Positive Streamersupporting

confidence: 62%

“…In StrAFE, the option exists to have either a Neumann-zero condition, or wall conditions following Hagelaar et al [47]. Using similar notation to Jovanovic et al [19], these are given by:…”

Section: F Boundary Conditionsmentioning

confidence: 99%

Section: A Basic Usage and Classesmentioning

confidence: 99%

mentioning

confidence: 99%

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The Design of a Python Library for the Automatic Definition and Simulation of Transient Ionization Fronts

et al. 2023

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“…To this end, the present article investigates striated structures in a singlefilament DBD in pure argon at atmospheric-pressure by means of a well-established fluid-Poisson model. While the same model has been used in [44,45] to analyse the formation of the very first (non-striated) discharge channel and the streamersurface interaction in the DBD, it is used here to study the particle gain and loss processes as well as the electron energy budget under periodic conditions. In fact, this represents the first in-depth analysis of the formation mechanisms of striations in a filamentary DBD at atmospheric pressure.…”

Section: Introductionmentioning

confidence: 99%

Formation mechanisms of striations in a filamentary dielectric barrier discharge in atmospheric-pressure argon

Jovanović

Hoder

Höft

et al. 2023

Plasma Sources Sci. Technol.

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Formation mechanisms of striations along the discharge channel of a single-filament dielectric barrier discharge (DBD) in argon at atmospheric pressure are investigated by means of a time-dependent, spatially two-dimensional fluid-Poisson model. The model is applied to a one-sided DBD arrangement with a 1.5 mm gap using a sinusoidal high voltage at the powered metal electrode. The discharge conditions are chosen to mimic experimental conditions for which striations have been observed. It is found that the striations form in both half-periods during the transient glow phase, which follows the streamer breakdown phase. The modelling results show that the distinct striated structures feature local spatial maxima and minima in charged and excited particle densities, which are more pronounced during the positive polarity. Their formation is explained by a repetitive stepwise ionisation of metastable argon atoms and ionisation of excimers, causing a disturbance of the spatial distribution of charge carriers along the discharge channel. The results emphasise the importance of excited states and stepwise ionisation processes on the formation of repetitive ionisation waves, eventually leading to striations along the discharge channel.

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Spatiotemporal evolution and its impact on the deposition behavior of atmospheric TEOS/O2/Ar plasma: A numerical study

Chang,

Dai,

Zhang

et al. 2023

Plasma Processes & Polymers

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Atmospheric dielectric barrier discharge (DBD) is a promising approach for large‐area deposition, whose spatiotemporal evolution determines the deposition rate and film chemistry. To investigate the relationship between the discharge and deposition behavior of tetraethoxysilane/oxygen/argon (TEOS//Ar) DBD, a one‐dimensional (1D) fluid model was constructed and experimentally verified. The calculation results reveal that TEOS mainly affects the discharge behavior via Penning ionization, while mainly affects discharge via attachment reaction. Penning ionization reduces the excited Ar and the attachment reaction reduces the number of discharges in half voltage cycles. As a result, merely increasing the concentration of TEOS or may not proportionally increase the deposition rate of relevant reactive species.

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Automated Fluid Model Generation and Numerical Analysis of Dielectric Barrier Discharges Using Comsol

Cited by 11 publications

References 32 publications

The Design of a Python Library for the Automatic Definition and Simulation of Transient Ionization Fronts

The Design of a Python Library for the Automatic Definition and Simulation of Transient Ionization Fronts

Formation mechanisms of striations in a filamentary dielectric barrier discharge in atmospheric-pressure argon

Spatiotemporal evolution and its impact on the deposition behavior of atmospheric TEOS/O2/Ar plasma: A numerical study

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