Mean model of the dielectric barrier discharge plasma actuator including photoionization

Shaygani, Afshin; Adamiak, K.

doi:10.1088/1361-6463/acaa43

Cited by 5 publications

(5 citation statements)

References 69 publications

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“…The electric field is produced by the electrodes and the space charge, and is governed by the Governing equations. The electric potential V, the electric field intensity E, the net space charge density ρ, and the number density of charge species c are calculated by solving the Poisson and charge continuity equations, explained in [31]. The source terms S of the continuity equations are replaced by (1).…”

Section: Mathematical Modelmentioning

confidence: 99%

“…The simplified model speedup has been three orders of magnitude over a fully coupled model. In [31], authors circumvented the computational burden by introducing an inertial term into the electron transport equation and suppressing the process of pulse formations. In [32], authors used stationary solvers instead of approximate or time-dependent methods, and this made it possible to do a wide range of numerical experiments on the timeaveraged characteristics of corona discharges.…”

Section: Introductionmentioning

confidence: 99%

“…LFA is a compromise between accuracy and computational expense [13,17,18,31,40,61]. In LFA the reaction parameters are calculated from BE and the swarm parameters are tabulated as a function of the reduced electric field [31]. These parameters can also be approximated by analytical expressions.…”

Section: Introductionmentioning

confidence: 99%

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Numerical approaches in simulating Trichel pulse characteristics in point-plane configuration

Shaygani

Adamiak

2023

J. Phys. D: Appl. Phys.

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In this work, a detailed comparison is made of a few different approaches to numerical modeling of non-equilibrium gas discharge plasmas in dry ambient air at atmospheric conditions, leading to Trichel pulse discharge. Simulation models are based on a two-dimensional axisymmetric finite element discretization of point-plane geometry. The negative corona discharge and the hydrodynamic approximation for generic ionic species (electrons, positive and negative ions) are used. The models account for the drift, diffusion, and reactions of the species. They comprise continuity equations coupled to Poisson’s equation for the electric field. Three different formulations were used to specify the ionic reaction rate coefficients. In the first one, the reaction coefficients are approximated by the analytical expressions as a function of the electric field intensity. Two others extract the reaction coefficients from the solution of the Boltzmann equation as a function of the reduced electric field or the electron energy. The effect of gas flow and heating on the pulse characteristics is also investigated. The accuracy of the models has been validated by comparing them with the experimental data.

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Section: Mathematical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical approaches in simulating Trichel pulse characteristics in point-plane configuration

Shaygani

Adamiak

2023

J. Phys. D: Appl. Phys.

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“…In recent years, an increasing number of studies have been carried out using pulsed or radiofrequency discharges (i.e., frequencies of 1 MHz and above) in systems with DBD-type reactors. In general, the performance of a DBD system significantly relies on the employed process parameters, e.g., gas pressure, gas type, gas flow rate, plasma excitation frequency and power, time, and reactor geometry [16][17][18]. Basic electrical parameters allow not only for control of the discharge; they are also useful for determining discharge modes [19,20].…”

Section: Introductionmentioning

confidence: 99%

On the Effect of Non-Thermal Atmospheric Pressure Plasma Treatment on the Properties of PET Film

Maliszewska,

Gazińska,

Łojkowski

et al. 2023

Polymers

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The aim of the work was to investigate the effect of non-thermal plasma treatment of an ultra-thin polyethylene terephthalate (PET) film on changes in its physicochemical properties and biodegradability. Plasma treatment using a dielectric barrier discharge plasma reactor was carried out in air at room temperature and atmospheric pressure twice for 5 and 15 min, respectively. It has been shown that pre-treatment of the PET surface with non-thermal atmospheric plasma leads to changes in the physicochemical properties of this polymer. After plasma modification, the films showed a more developed surface compared to the control samples, which may be related to the surface etching and oxidation processes. After a 5-min plasma exposure, PET films were characterized by the highest wettability, i.e., the contact angle decreased by more than twice compared to the untreated samples. The differential scanning calorimetry analysis revealed the influence of plasma pretreatment on crystallinity content and the melt crystallization behavior of PET after soil degradation. The main novelty of the work is the fact that the combined action of two factors (i.e., physical and biological) led to a reduction in the content of the crystalline phase in the tested polymeric material.

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“…Recently, Shaygani and Adamiak proposed a simplified algorithm to study a plasma flow control actuator [7,21]. They implemented a three-species fluid model in COMSOL Multiphysics and limited discharge pulses by adding a dumping term to the electron charge transport equation in order to decrease the simulation time.…”

Section: Introductionmentioning

confidence: 99%

A Boltzmann Electron Drift Diffusion Model for Atmospheric Pressure Non-Thermal Plasma Simulations

Popoli,

Ragazzi,

Pierotti

et al. 2023

Plasma

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We introduce a fluid computational model for the numerical simulation of atmospheric pressure dielectric barrier discharge plasmas. Ion and neutral species are treated with an explicit drift diffusion approach. The Boltzmann relation is used to compute the spatial distribution of electrons as a function of the electrostatic potential and the ionic charge density. This technique, widely used to speed up particle and fluid models for low-pressure conditions, poses several numerical challenges for high-pressure conditions and large electric field values typical of applications involving atmospheric-pressure plasmas. We develop a robust algorithm to solve the non-linear electrostatic Poisson problem arising from the Boltzmann electron approach under AC electric fields based on a charge-conserving iterative computation of the reference electric potential and electron density. We simulate a volumetric reactor in dry air, comparing the results yielded by the proposed method with those obtained when the drift diffusion approach is used for all charged species, including electrons. We show that the proposed methodology retains most of the physical information provided by the reference modeling approach while granting a substantial advantage in terms of computation time.

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Mean model of the dielectric barrier discharge plasma actuator including photoionization

Cited by 5 publications

References 69 publications

Numerical approaches in simulating Trichel pulse characteristics in point-plane configuration

Numerical approaches in simulating Trichel pulse characteristics in point-plane configuration

On the Effect of Non-Thermal Atmospheric Pressure Plasma Treatment on the Properties of PET Film

A Boltzmann Electron Drift Diffusion Model for Atmospheric Pressure Non-Thermal Plasma Simulations

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