Showing papers in "Journal of Electrostatics in 2004"

TL;DR: A semi-quantitative charging series that includes a wide range of synthetic and natural polymers was constructed by combining four qualitative triboelectric series from literature reports plus quantitative charging results with metal contacts as discussed by the authors.

TL;DR: In this paper, a numerical technique is proposed for determining the distributions of electric field and charge density in the case of a positive corona discharge in gas in the point-plane geometry.

TL;DR: In this article, the performance of several electrical discharge gliding arc (glidarc) reactors for the removal of an organic dye from aqueous solution has been studied The glidarc reactors utilized AC electrical discharges with two different electrode configurations In one case, two electrodes were placed in the gas phase over the liquid surface.

TL;DR: The aim of these interfaces is to extend the simulation capabilities of the LIOV code, which computes lightning-induced voltages on a single multiconductor transmission line above lossy ground, to the case of distribution systems characterized by complex yet realistic configurations.

TL;DR: In this article, the authors investigated agglomeration characteristics of bipolarly charged particles under an AC electric field and to investigate charging characteristics of particles by using wire-to-plate type DC corona chargers.

TL;DR: In this article, a brief description of the lightning measurement systems is provided, with emphasis on the current measurement system, and the statistical analysis shows that in 50% of the current records, the current wavefront maximum steepness exceeds 18.8 kA/μs.

TL;DR: In this article, it was shown that for an assumed return-stroke model, the statistical estimation (e.g. in terms of mean values and standard deviations) is possible.

TL;DR: In this paper, the authors present a two-phase model based on an ideal gas of singly-charged ions in equilibrium with a submonolayer adsorbed film, and show that the amount of charge exchange is highly dependent on the atmospheric pressure of the gas.

TL;DR: In this paper, the authors present a study of the application of the electric field measurement at ground level as a basis for lightning hazard warning and present a methodology to evaluate every particular situation.

TL;DR: In this paper, the present electrode configuration and arrangement of the electrostatic precipitator (ESP) have been determined, based on experimental data from the laboratory scale ESP and operational experiences of the full-scale ESPs.

TL;DR: In this article, electric field measurements and Faraday pail were used to assess the charging processes of spray drying processes, and the results showed that the static charge might be generated in different ways: double layer charging in the feed pipe, double layer or induction charging at the spray nozzle, and contact and frictional charging at walls of the spray cylinder and the cyclone chamber.

TL;DR: In this article, a pulsed corona plasma system for tar removal from fuel gas was described, and experiments were performed under gaseous temperatures of up to 500°C.

TL;DR: In this paper, an original numerical method is proposed for solving the differential equations that describe the combined corona-electrostatic electric fields, based on the use of a special approximation algorithm for non-linear differential operators.

TL;DR: In this paper, a stochastic probability model based on fractal theory is introduced to simulate and analyze the initiation and propagation processes of the actual discharge in soil under lightning current.

TL;DR: In this article, a charge-injected electrostatic pressure-swirl (EPSW) applicator was used for a kerosene-based oil burner with a sharp pointed tungsten wire as a charge injector and the body grounded.

TL;DR: It is shown that the previous models of the CG type may be incapable of reproducing adequately the observed electromagnetic fields when the channel base current contains a slow front.

TL;DR: In this paper, the influence of some physical characteristics of the lightning channel on spatial and temporal return-stroke current distribution is considered, and the results are obtained by simulation, employing a hybrid electromagnetic model.

TL;DR: In this paper, the authors present the procedure of separation electrostatique des metaux and des materiaux isolants contenus dans un melange granulaire, which is a technique de plus en plus utilisee dans l'industrie du recyclage des dechets.

TL;DR: In this article, the electrostatic force of adhesion between a spherically symmetric charge distribution in contact with a conductive ground plane is derived using the method of images.

TL;DR: In this paper, a frictional experiment was designed to examine mechanical fracture of polymers in a vacuum in the dark at 77 K. The results showed that the mechanical force on a biased carbon-carbon bond, composed of bonding electrons biased by a substituent group or atom attached to the carbons, induced heterogeneous scission of the carbon−carbon bond and produced macro-ionic species (called PVC and PVF mechano-anions).

TL;DR: In this paper, a lightning protection design concept for a renewable energy hybrid-system without power mains connection, VATALI on the Greek island Crete, is described based on the risk analysis protection measures against direct strikes and overvoltages are defined.

TL;DR: In this article, the design of electrostatic sensors embedded in different materials commonly used in planetary spacecraft and their possible use in future exploration missions to the planet is described, as well as the possible use of such sensors in future Mars landers.

TL;DR: In this paper, the electric and magnetic field structures around a semi-infinite thin-wire antenna vertically placed above a perfectly conducting ground plane are investigated when the antenna is supporting two different types of sources.

TL;DR: In this article, the features of the various methods in use for measurement of charge decay are discussed, and it is noted that none of the methods that start with the material charged and tested by earthing the test area boundary can be considered valid because this situation does not match practical experience.

TL;DR: In this article, the biased-plate monitor (BPM) is used to describe air ionization systems. But the BPM is faster and more descriptive than the traditional charged-plate method, and can also be made much smaller if the region of interest is confined.

TL;DR: In this article, the magnetic fields and their derivatives at several positions inside the structure as well as the voltage between “floor” and “roof in the center were determined for different current injection points.

TL;DR: In this paper, a risk assessment methodology using fuzzy logic is proposed to quantify and qualify uncertainties related to lightning strike probability, presence of a damage channel (type of coupling) or presence of the victim (equipment, human beings, structure itself, etc.).

TL;DR: In this article, a dipole-enhanced approximation to calculate the saturation charge of particles for high-volume fraction particles is presented, which depends on the volume fraction of particles, and the maximum field strength at the surface of one sphere is derived.

TL;DR: In this paper, the authors proposed nonlinear differential equations, describing the dynamics in cyclone with electrostatic excitation, using chaos theory, to obtain a cut diameter, which can be used for the design optimal for the electrocyclone separator.

TL;DR: In this article, the effects of very-fast high-current pulses that occur during charged device model (CDM) ESD events lead to transient voltage overshoots in forward and reverse-biased pn-junctions, called forward recovery and dynamic reverse overshoot.