Simulation of corona discharge in point–plane configuration

Adamiak, K.; Atten, P.

doi:10.1016/j.elstat.2004.01.021

Cited by 231 publications

(106 citation statements)

References 15 publications

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“…The magnitude of this critical electric field strength E0 is often obtained from Peek's formula whose two variants have been derived for highly symmetrical spherical and cylindrical geometries. It is therefore, strictly valid only if electric field is uniform over the surface of corona electrode [6,18]. In simple configurations where this condition is observed it is possible to iteratively search for uniform value of space charge density on the surface of corona electrode such that resulting value of electric field strength meets the critical value E0 calculated from Peek's formula.…”

Section: Geometry and Boundary Conditionsmentioning

confidence: 99%

“…To overcome this problem some more sophisticated algorithms have been developed. In [6] a hybrid approach involving Boundary Element Method (BEM), Finite Element Method and the Method of Characteristics (MOC) is presented. This allows each type of equation to be solved with most effective method: Laplace approximation is solved with BEM, Poisson equation with FEM and charge transport with MOC.…”

Section: Nomenclaturementioning

confidence: 99%

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Numerical modeling of body force induced by corona discharge

Gałek

2017

ZN PRz Mechanika

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The paper presents the theoretical basis and results of numerical modeling of corona discharge phenomenon carried out to determine the value of body force that induces the flow of surrounding fluid. The system of two partial differential equations is solved with the values of electric potential ϕ and space charge density ρq as unknowns. The first equation is of Poisson-type with Laplacian acting on the value of potential and source term dependent on space charge density as well as electric permittivity of the medium. The second equation is current continuity equation, where the current density is composed of charge carrier diffusion term and the term describing their drift in electric field. Particular attention was given to the boundary condition of space charge density due to its indirect nature. Geometry of the problem assumes that positive corona discharge takes place on the sharp edge of the blade-shaped anode while flat grounded plate acts as a cathode. Such configuration enables simplified analysis in 2D Cartesian coordinates assuming that the section plane is sufficiently far from the lateral edges of the blade. The system of equations is solved with MOOSE (Multiphysics Object-Oriented Simulation Environment) Framework released in public domain on GNU LGPL license by Idaho National Laboratory. Presented results include 2D distributions of electric potential, electric field strength, space charge density and body force in air surrounding electrodes.

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Section: Geometry and Boundary Conditionsmentioning

confidence: 99%

Section: Nomenclaturementioning

confidence: 99%

Numerical modeling of body force induced by corona discharge

Gałek

2017

ZN PRz Mechanika

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“…The alternative method of solving the nonlinearity adopted, e.g., in Ref. [2] or Refs. [16,15] does not seem to reduce such numerical problems.…”

Section: Modeling Of Charge Injectionmentioning

confidence: 99%

“…Both experimental and numerical studies of EHD phenomena have been presented in recent literature. For example, Adamiak and others [2,3,4,5] studied the DC and pulsed corona discharge between a needle and a plate collector, using different numerical methods (FEM, BEM, FCT etc.) for the approximation of each equation in the PDE system; Ahmedou and Havet [6,7,8] used a commercial FEM software to investigate the effect of EHD on turbulent flows; Moreau and Touchard, [9] Huang and others, [10] and Kim and others [11] experimentally studied different EHD devices designed for cooling or air pumping purpose; Chang, Tsubone and others [12,13,14] made extensive experimental study of the forced airflow and the corona discharge in a converging duct; Jewell-Larsen and others [15,16,17,18,19,20,21] and Go and others [22,23,24,25,26] conducted both experimental and numerical studies aimed at designing and applying ionic wind cooling devices to thermal management of electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Multiphysics simulation of corona discharge induced ionic wind

Cagnoni

Agostini

Christen

et al. 2013

Journal of Applied Physics

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Ionic wind devices or electrostatic fluid accelerators are becoming of increasing interest as tools for thermal management, in particular for semiconductor devices. In this work, we present a numerical model for predicting the performance of such devices, whose main benefit is the ability to accurately predict the amount of charge injected at the corona electrode. Our multiphysics numerical model consists of a highly nonlinear strongly coupled set of PDEs including the Navier-Stokes equations for fluid flow, Poisson's equation for electrostatic potential, charge continuity and heat transfer equations. To solve this system we employ a staggered solution algorithm that generalizes Gummel's algorithm for charge transport in semiconductors. Predictions of our simulations are validated by comparison with experimental measurements and are shown to closely match. Finally, our simulation tool is used to estimate the effectiveness of the design of an electrohydrodynamic cooling apparatus for power electronics applications.PACS: 52.80. -s , 47.65.-d

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“…The authors have previously studied macroscale planar configurations for heat transfer enhancement in the presence of an external bulk flow and reported over a 200% increase in the local heat transfer coefficient using a dc corona discharge and electrode gaps of 3-5 mm [27,28]. In addition to experiments, the modeling of macroscale, dc corona discharges using continuum-scale equations has been studied [29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Direct simulation of ionization and ion transport for planar microscale ion generation devices

Fisher²,

Garimella³

2009

J. Phys. D: Appl. Phys.

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The theoretical performance of a planar microscale ion generation device is analyzed using the direct simulation Monte Carlo (DSMC) technique. The discrete motion and interactions of electrons and ions are modeled for atmospheric air as represented by N 2 and O 2 . The ionization threshold of the device in air is found to be 70 V because of the effects of molecular excitations that reduce the energy of the free electrons and the nature of the collision cross-sections. Additionally, microscale planar ionization devices are revealed to be inherently inefficient because of the loss of electrons and ions to the dielectric boundary. A multiscale simulation of the electrohydrodynamics is also conducted by extracting the ion-neutral interactions from the DSMC calculations and integrating them into a continuum-scale fluid dynamics model. The multiscale simulations show that the ion-neutral body force distribution for the planar devices is concentrated on the face of the cathode and therefore limits the impact of the force on the flow. A scale analysis confirms that the body force distribution is insufficient to induce high flow rates at this scale.

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Simulation of corona discharge in point–plane configuration

Cited by 231 publications

References 15 publications

Numerical modeling of body force induced by corona discharge

Numerical modeling of body force induced by corona discharge

Multiphysics simulation of corona discharge induced ionic wind

Direct simulation of ionization and ion transport for planar microscale ion generation devices

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