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Influence of nonuniform electric field due to a spherical collector on the particles dynamics in quiescent air J. Electrostat. (IF 1.8) Pub Date : 2024-03-12 Abhishek Srivastava, Debabrat Biswal, Bahni Ray, Mayank Kumar, Debabrata Dasgupta
This study investigates particle dynamics impacting a charged spherical collector through experiments and simulations, revealing the influence of the collector’s non-uniform potential field. Electrostatic and drag forces govern trajectories, while gravity and dielectrophoretic forces play a minor role. Positive electrostatic and negative drag work are comparable, offering critical insights into particle
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Electrical properties of the unit square plate J. Electrostat. (IF 1.8) Pub Date : 2024-03-12 Jaeho Kim, Chi-Ok Hwang
Numerical values of electrostatic properties of the cube are well investigated whereas numerical ones of the square plate are not. In this paper, we update the numerical values of electrostatic properties of the unit square plate, such as the capacitance, and the edge and corner singularity exponents. For the capacitance, we use the refined Brownian dynamics algorithm with “walk-on-planes” (WOP) method
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Extraction of transferred charge signal of gas-solid two-phase flow based on nonlinear time domain analysis J. Electrostat. (IF 1.8) Pub Date : 2024-02-29 Lin Jia, Xujun Su, Guibo Yu, Qiao Ma, Jinli Che
—When the particles are in the gas-solid two-phase flow, the transferred charge will be generated. The transferred signal obtained by using the inner flush-mounted electrostatic sensor is rich in flow information, which can provide important support for studying the flow law of gas-solid two-phase flow. In this paper, the nonlinear time-domain analysis method based on embedded empirical mode decomposition
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An investigation of the electroconvection flow and solid extraction during melting of phase-change materials J. Electrostat. (IF 1.8) Pub Date : 2024-02-23 Ahmed Hassan, James S. Cotton
This paper presents numerical and experimental investigations of electrohydrodynamic (EHD) flow and solid extraction during melting of phase-change materials (PCMs) in a rectangular cavity under constant temperature boundary conditions. It was found that EHD generated electroconvection cells in the liquid PCM between each pair of electrodes. The fluid velocity increased with applied voltage and decreased
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Staticaponics: Electrospray delivery of nutrients and water to the plant root zone J. Electrostat. (IF 1.8) Pub Date : 2024-02-20 S. Rahman Pejman Sereshkeh, Bryan Llumiquinga, Sriya Bapatla, Michael J. Grzenda, David Specca, Arend-Jan Both, Jonathan P. Singer
Electrospray deposition (ESD) was utilized for targeted nutrient and water delivery to the roots of lettuce plants. Compatibility of ESD with nutrient solutions was confirmed; however, detrimental effects of ESD electric fields/current on plant growth were observed. To overcome this, a novel approach called “Staticaponics" was introduced by separating current and mass transport of ESD using a grounded
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Enhancement of flow mixing using a two-stage EHD gas pump with electrodes anchored at one corner of channel J. Electrostat. (IF 1.8) Pub Date : 2024-02-13 S.-C. Lin, S.-L. Wu, S.-H. Liou, F.C. Lai
The present study examines the use of a two-stage electrohydrodynamic (EHD) gas pump with its electrodes assembly anchored at one corner of a square channel to modify the characteristics of flow inside the channel. Specifically, the proposed EHD pump is examined for its effectiveness in enhancing flow mixing as well as reducing the power requirement. The present study is also aimed at confirming one
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Theoretical comparison of effects of different cross fields on low pressure DC glow discharge J. Electrostat. (IF 1.8) Pub Date : 2024-02-06 S, h, e, n, , G, a, o
the mathematical models of glow discharge in transverse (y-direction) and axial (z-direction) magnetic fields are established in this paper. Firstly, Paschen's law is modified for different cross fields. The results show that the breakdown voltage first decreases and then increases with the increase of y-direction magnetic field at the same pressure. The breakdown voltage of glow discharge in z-direction
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Measurement of transferred charge in brush discharges from insulating materials J. Electrostat. (IF 1.8) Pub Date : 2024-02-03 Paul Holdstock
Safe practice requires that the use of insulators is avoided in hazardous areas containing potentially explosive atmospheres. However, in some processes, insulators are essential components and cannot be replaced by conducting materials. Evaluation of insulators for safe use in hazardous areas is discussed with particular reference to the requirements of international standards. Examples of testing
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Modeling of a novel large-scale electrohydrodynamic vortex flow induced by variation in current density for drag reduction with implication of electrostatic particle clustering J. Electrostat. (IF 1.8) Pub Date : 2024-02-01 E, r, i, c, , M, o, n, s, u, , L, e, e
The recent emphasis on environmental justice by the U.S. EPA has motivated the aerosol research community to develop innovative and cost-effective particulate matters (PMs) control technologies for subpopulations who are frequently exposed to indoor PMs. PM collection by electrostatic precipitation (ESP) has been proposed for indoor usage because it provides advantageous features over conventional
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Evaluation of degradation degree of artificially degraded silicone rubber surface by using surface discharge J. Electrostat. (IF 1.8) Pub Date : 2024-01-29 May Thin Khaing, Takuma Miyake, Tatsuya Sakoda, Uki Kanenari, Yusuke Nishihiro
To establish an evaluation technique of the degradation degree of silicone rubber (SiR) surfaces, we first fabricated artificially degraded SiR surfaces. The fabrication process consisted of 5 steps and a 1-cycle test required 24 h. We fabricated the degraded SiR surfaces by a 1-cycle or a 2-cycle test. Next, the artificially degraded SiR surface was exposed to surface discharge (SD). The hydrophobicity
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In-situ evaluation of a commercial electrostatic precipitator integrated in a small-scale wood chip boiler J. Electrostat. (IF 1.8) Pub Date : 2024-01-25 Jordi F.P. Cornette, Igor V. Dyakov, Paul Plissart, Svend Bram, Julien Blondeau
Electrostatic precipitators (ESP) are an effective means of reducing particulate matter emissions from biomass combustion. This study presents a comprehensive evaluation of the performance of an ESP integrated in a 240 kW wood chip boiler. The boiler-integrated ESP is commercially available and is evaluated in-situ using two types of wood chips, unlike previous studies, which mainly focuses on prototypes
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Leader discharge characteristics of equipotential live-line work gaps under positive switching impulse J. Electrostat. (IF 1.8) Pub Date : 2024-01-18 Yaqi Fang, Bingsen Yang, Zhipeng Liu, Jiachen Gao, Suhan Mao, Xiaoxing Zhang
The leader discharge is the primary process in long air gap discharge. However, there is currently a lack of detailed observation of the development process of leader discharge in equipotential live-line work (EPLW) gaps. Therefore, this study utilizes an electrical and optical synchronous observation platform to measure the key parameters of leader discharge in two typical EPLW gaps with gap distance
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Investigating the wettability control of fluorocarbon-coated nanofiber membranes by electrowetting process J. Electrostat. (IF 1.8) Pub Date : 2024-01-17 Afsaneh Valipouri, Abdulkarim Alsikh, Zahra Rahimi Dashtlouei
The aim of this study is to investigate the wettability control performance of a fluorocarbon-coated nanofiber membrane under the electrowetting process. The outcome nanofiber membrane was evaluated for chemical composition, morphology, surface roughness, and wettability. Through the electrowetting process, we give an estimate of some major effects as fine nanofibers, small liquid volume, low anode-cathode
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Space charge measurement at solid/liquid interface by PWP method J. Electrostat. (IF 1.8) Pub Date : 2024-01-13 V. Berry, P. Leblanc, S. Holé, T. Paillat
The presence of electric charges within liquid is relatively unexplored despite its role in electrochemical energy storage and industrial safety. Quantifying charge distribution in liquids and at solid/liquid interfaces is therefore crucial to the efficiency and longevity of devices. Over time, metrologies using stimulus to measure space charges in solids have been transposed to liquids. The stimulus
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Investigation of the photovoltaic effect and tribovoltaic effect at the GaAs semiconductor-liquid interface J. Electrostat. (IF 1.8) Pub Date : 2024-01-10 Mesut Yalcin, Deniz Kadir Takci, Abuzer Fikret Demirel
Contact electrification (CE) is a physical phenomenon that occurs between two materials. When two materials with different electron affinity are contacted, electrons move along the contacting surfaces due to triboelectrification. The result of this effect is direct current. In this study, the triboelectric current is generated by the bindington energy generated by sliding a water drop on n-type, p-type
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Rolling droplets and partial discharges in AC electric field J. Electrostat. (IF 1.8) Pub Date : 2024-01-06 K.D. Poluektova, S.A. Vasilkov, A.V. Slesarenko, A.V. Samusenko
High-voltage silicone insulators can be used in climatic conditions such as rain or fog since they are hydrophobic. However, water droplets lead to discharges, which reduces hydrophobicity of the silicone rubber which is, in turn, is a first step to failure of an insulator. To increase the resistance of the rubber to the discharges, it is necessary to study the discharges between droplets in detail
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A numerical study on applying ion concentration polarization in micropump design J. Electrostat. (IF 1.8) Pub Date : 2024-01-03 Khai H. Nguyen, Dung T. Nguyen, Van-Sang Pham
This work focuses on applying the phenomenon of ion concentration polarization to design and investigate a micropump model that is a kind of electroosmotic micropump. Numerical study is conducted for ion concentration polarization in the manner that generates electro-osmosis flow and pumping effect. The formation of the extended space charge layer and the actions of the electric field upon this layer
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Determining the streamer velocity in an atmospheric pressure plasma jet from the target substrate current J. Electrostat. (IF 1.8) Pub Date : 2023-12-27 Michael J. Johnson, Carl Enloe, David R. Boris, Tzvetelina B. Petrova, Scott G. Walton
Plasma jets are an atmospheric pressure plasma source that projects streamers outside the bounds of the plasma device. The electric field produced by these streamers can generate a current in the substrate before the streamer contacts the substrate. This displacement current is a strong function of the proximity of the streamer to the surface. We develop a basic model of the streamer traveling towards
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Using heat exchanger for construction of electrostatic precipitator in a small heat source J. Electrostat. (IF 1.8) Pub Date : 2023-12-29 Michal Holubčík, Juraj Trnka, Nikola Čajová Kantová
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Designing a new microchannel to collect microparticles using dielectrophoretic forces: Numerical and experimental investigation J. Electrostat. (IF 1.8) Pub Date : 2023-12-18 M. Aghdasi, M. Nazari, S. Yonesi Holari, Nicole N. Hashemi
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Growth analysis of the particle layer in a small-scale ESP with biomass combustion J. Electrostat. (IF 1.8) Pub Date : 2023-12-14 Natalia Cid, Sergio Chapela, Miguel Ángel Gómez, David Patiño
This study presents experimental results of the particle layer growth with the operation of a small-scale ESP as a flue gas cleaning method from domestic biomass combustion. The retention efficiency of the ESP is maintained above 90% for 40 h of operation, which is in agreement with its natural regeneration by partial collapses of the dust layer. The measurements of profile and thickness of the dust
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Revisiting the effects of electrostatic forces on the lifting of sand particles in dust storms J. Electrostat. (IF 1.8) Pub Date : 2023-12-08 Huan Zhang
We derived theoretical formulations for the fluid threshold of conducting and insulating sand particles under an imposed electric field. Our analysis reveals a non-monotonic dependency of the fluid threshold on particle diameter, imposed electric field, and surface charge density. For conducting particles, electrostatic forces lead to a reduction of the fluid threshold by up to 31%. In contrast, for
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Study on atomization of grounding electrodes under the influence of magnetic field for dedusting and desulfurization of negative corona discharge J. Electrostat. (IF 1.8) Pub Date : 2023-12-05 Yuhua Guan, Wei Chen, Junfeng Mi, Shengnan Du
Corona discharge low-temperature plasma technology has good performance in treating dust and removing gaseous pollutants. In this paper, the dust and SO2 in the flue gas are removed by using the ground electrode atomization negative corona discharge device under the action of a magnetic field, and the discharge characteristics of the device, the removal efficiency of dust and sulfur dioxide, and its
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Energy-saving discharge needle shape for electrohydrodynamic airflow generation J. Electrostat. (IF 1.8) Pub Date : 2023-12-06 Donato Rubinetti, Kamran Iranshahi, Daniel I. Onwude, Bart M. Nicolaï, Lei Xie, Thijs Defraeye
Electrohydrodynamics (EHD) is a way to produce low energy-consuming airflow without moving components. The basis of airflow by EHD is corona discharge. A way to generate corona discharge is done, among others, via needle-type emitter electrodes whose shape and arrangement play a crucial role in the effectiveness of the discharge. Until now, the needle shape was chosen somewhat arbitrarily, although
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Field electron emission in the atmospheric pressure range J. Electrostat. (IF 1.8) Pub Date : 2023-11-29 L. Trascinelli, K.L. Aplin
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Characterization of corona discharge treatment on PTFE surface for TENG applications J. Electrostat. (IF 1.8) Pub Date : 2023-11-11 Euihyun Jo, Hyerim Kim, Young Jun Park, Hyungmin Park, Minbaek Lee
As for practical application of triboelectric nanogenerators (TENGs), corona discharge treatment (CDT) is often utilized further to enhance its power outputs by injecting charges. We report compositional analysis and corresponding triboelectric outputs of Poly(1,1,2,2-tetrafluoroethylene) (PTFE) based TENGs. PTFE and Al based TENGs with various PTFE film thickness are fabricated and their performances
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Capacitance of a conducting hollow cylindrical shell in a closed form J. Electrostat. (IF 1.8) Pub Date : 2023-11-08 E. Romashets, M. Vandas, C. Şen
The charge distribution within a hollow conducting cylinder with zero-thickness walls is calculated from the minimum potential energy (U) consideration. The surface charge density consists of a diverging term (Jackson, 1975) and a sum of Legendre polynomials with the coefficients determined from the minimum U approach. The sum converges. This allows to express the capacitance in closed form. It is
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The discharge characteristics and benzene degradation performance of a three-electrode DBD reactor powered by dual AC power generators J. Electrostat. (IF 1.8) Pub Date : 2023-11-05 Xiaoran Fan, Kefeng Shang, Ying Chen, Nan Jiang, Na Lu, Jie Li
A three-electrode hybrid volume/surface dielectric barrier discharge (V-SDBD) configuration with two plane electrodes and six grounded strips electrode was designed for enhancing the generation of discharge plasma to degrade gaseous benzene. Two plane electrodes were separately powered by a 5 kHz AC generator and a 50 Hz AC generator, respectively. Compared with the typical two-electrode volume DBD
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Space charge and its effects on oil-paper insulation in power transformers: A review J. Electrostat. (IF 1.8) Pub Date : 2023-11-03 Raymon Antony Raj
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A surface dielectric barrier discharge reactor for biological treatments J. Electrostat. (IF 1.8) Pub Date : 2023-10-24 Tamer Akan, Çağrı Durmuş
Antimicrobial plasma effects are promising for therapeutic applications like wound healing, cancer/tumor treatment, or pathogen-associated skin or dental diseases, but also in hygiene, food, and agriculture processing. Dielectric Barrier Discharge (DBD) reactors are the most widely used systems for antimicrobial purposes because they can use atmospheric air as a gas, do not require a vacuum, and are
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Mechanisms of like-charge attraction in many-body systems J. Electrostat. (IF 1.8) Pub Date : 2023-10-18 Xuwei Zhang, Weidong Chen, Min Wang, Ho-Kei Chan
The physics of like-charge attraction in a collinear binary system of N particles has been investigated via a polarizable-ion model. It was found that like-charge attraction between an array of (N−1) type-A particles on the left and a single type-B particle on the right is conditional upon a sufficient degree of dissimilarities between the two types of particles. By assuming that (1) the particles
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Finite element analysis of a 3D triboelectric nanogenerator for biophysical health monitoring applications J. Electrostat. (IF 1.8) Pub Date : 2023-10-18 Shivani Gupta, Yogita Batra
The Triboelectric nanogenerator (TENG) has numerous applications in biophysical health monitoring due to its small size, lightweight, and economical use. The triboelectric effect occurs when two triboelectric materials with opposite polarities come into contact or rub against each other. This paper presents the simulated output performance of a three-dimensional TENG with two opposite dielectric circular
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The equilibrium of particles electrostatically confined by external forces and the competition between the electrostatic interaction and gravitational field J. Electrostat. (IF 1.8) Pub Date : 2023-10-16 J.W. Sirpa-Poma, F. Ghezzi, G.M. Ramírez-Ávila
This study sets out to describe the interaction of charged confined particles with a gravitational field. The system consisted of charged particles interacting electrostatically between themselves and with a confining box whose walls have a linear charge distribution. We studied numerically several configurations including the introduction of a tilt, that takes into account the Earth’s gravitational
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Modal analysis of EHD jets through the SVD-based POD technique J. Electrostat. (IF 1.8) Pub Date : 2023-09-28 Zelu Yan, Ji Gong, Christophe Louste, Jian Wu, Jian'an Fang
An EHD flow has complex characteristics with superimposed characteristic structures of various scales due to the coupling effect of the electric and flow fields. This paper provides a new research perspective on active control techniques of EHD flows by unraveling the large-scale dynamic structure of the dominant electroconvection from the manifold of the jet. The SVD-based POD technique in our work
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Numerical analysis of coalescence motion of droplets in oil under CPPM electric field J. Electrostat. (IF 1.8) Pub Date : 2023-09-24 Ye Peng, Yuan Fang, Youyu Zhang, Zhixiang Liao, Bao Yu, Haifeng Gong
In this work, the coalescence motion characteristics of two droplets under the chaotic pulse position modulation (CPPM) electric field and the influence of electric field parameters on the coalescence motion of the droplets were studied. The numerical results show that the coalescence motion of the droplets under the action of CPPM electric field is related to the deformation relaxation time. The pulse
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Dielectric barrier discharge as bipolar ion source for aerosol charging: Application to filtration, thin film, and aerosol size measurement J. Electrostat. (IF 1.8) Pub Date : 2023-09-20 Nicolas Jidenko, Rémi Mathon, Valentin Gérard, Abdul Malik Adédiran, Jean-Pascal Borra
We have investigated the potentialities of dielectric barrier discharges (DBD) for aerosol electro-processing with a special focus on ion production and aerosol charging for deposition (filtration and materials) and aerosol measurement tools. The advantages and drawbacks of aerosol injection downstream or upstream of the discharge are compared according to the application. The main parameters that
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Ag seed layer effects on SnO2 thin films for triboelectric devices J. Electrostat. (IF 1.8) Pub Date : 2023-09-09 E. Yüzüak, G. Durak Yüzüak
Materials with triboelectric properties are critical to boosting the efficiency of triboelectric nanogenerators (TENG) by gathering power from waste force and mechanical movement. In this study, we explored tin-oxide (SnO2) thin films with silver (Ag) seed layer properties for friction surfaces at TENGs. Investigation of the triboelectric behavior of semi-conductor/polymer coupling structured TENGs
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A multi-scale simulation method for powder coating with moving powder guns J. Electrostat. (IF 1.8) Pub Date : 2023-08-27 Tomas Johnson, Andrea Ruggiu, Melanie Quast, Karlheinz Pulli, Andreas Mark, Matthias Bader, Niklas Sandgren, Markus Cudazzo, Fredrik Edelvik
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Dependence of surface charge density on curvature of surface of conductive body with complicated shape J. Electrostat. (IF 1.8) Pub Date : 2023-08-26 Yulia V. Samukhina, Natalia E. Rusakova, Peter A. Polyakov
In the paper, a surface curvature of an odd-shaped solid conductor is under investigation. The correlation between the surface charge density and the surface curvature along the surface is analysed theoretically. The key result is that the surface charge density reaches a maximum at a location that is different from where the surface curvature is maximum. This new result has implications for scanning
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Convective heat transfer enhancement by corona discharge in a wire–cylinder electrostatic precipitator with the water-cooling system J. Electrostat. (IF 1.8) Pub Date : 2023-08-25 Hui Fu, Wenyi Xu, Shuran Li, Zhen Liu, Keping Yan
Aiming at the current wet plume problem, we present a novel technique to integrate electrostatic precipitator (ESP) and heat exchanger in order to simultaneously increase heat exchange efficiency, collect water and control particle emission from flue gases. Unlike the conventional ESP, a lab-scale wire–cylinder type ESP with the collection electrode cooling by water is used for investigations in this
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Effect of collection efficiency and reducing ozone generation in an electrostatic precipitator with knife edge disk type electrode J. Electrostat. (IF 1.8) Pub Date : 2023-08-12 Akinori Zukeran, Yuto Ikeda, Fumiki Mashimo, Koji Yasumoto, Masahiro Matsumoto, Noboru Matsumoto
In this study, the experiments were carried out to investigate the effect of a wire diameter on reducing ozone generation and improving the collection efficiency for particle sizes larger than 24 nm in an electrostatic precipitator (ESP) with wire electrode. Furthermore, the effect of the ESP with a knife-edge disk electrode was also investigated, since a wire will be broken. The ESP consisted of a
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The effect of the corona wire distribution with W-type of collecting plates on the characteristics of electrostatic precipitators J. Electrostat. (IF 1.8) Pub Date : 2023-08-10 Moath Bani Fayyad, Angel Asipuela, Tamás Iváncsy
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Lightning current analysis for tall tower strike using 3D FEM J. Electrostat. (IF 1.8) Pub Date : 2023-07-30 Md. Kamal Hossain, Md. Faruque Hossain
In this study, the lightning current waveforms at the middle and bottom positions for 60 m tall tower strikes were observed using the three-dimensional finite element method (3D-FEM). When creating the model for lightning current waveform analysis at the middle and bottom positions of towers, base current speed and ground conductivity characteristics were taken into account. The model was developed
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Comparison of negative streamer development in synthetic ester and mineral oil in a point-sphere gap divided by a pressboard barrier J. Electrostat. (IF 1.8) Pub Date : 2023-07-23 Pawel Rozga, Filip Stuchala, Bartlomiej Pasternak, Malgorzata Binek
This article presents the results of the studies on development of negative streamers in synthetic ester and mineral oil with electrode system using a pressboard barrier. The tests were performed at standard lightning impulse voltage in point-sphere electrode configuration as reference system and a 5 mm thick pressboard barrier placed in different locations between the point and the sphere. Introducing
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Experimental study on streamer-leader transition characteristics of sphere-plane gap in valve hall under positive switching impulse voltage J. Electrostat. (IF 1.8) Pub Date : 2023-07-23 Yaqi Fang, Suhan Mao, Bingsen Yang, Hongxian Tu, Zhi Zhang, Junkang Fang, Xiaoxing Zhang
Since a large number of spherical shielding balls are adopted in valve hall, investigating discharge characteristics of sphere-plane gap is of great significance for insulation design in HVDC projects. In order to study the discharge physical process of sphere-plane gap, this paper conducts sphere-plane gap experiment with gap distance set to 1.0 m and 1.5 m and electrode diameter set to 0.2 m, 0.3 m
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Electrohydrodynamics of conducting droplets suspended in a low-conducting liquid: The effect of the difference in mobilities of positive and negative ions J. Electrostat. (IF 1.8) Pub Date : 2023-06-29 I.A. Dobrovolskii, S.A. Vasilkov, V.A. Chirkov
Accurate numerical and mathematical models are needed to develop technologies such as electrostatic phase separation of oil-water emulsions based on two-phase electrohydrodynamics. However, it is still unclear in which cases the ionic conductivity of the oil should be taken into account and what additional effects may appear. To address this issue, the present work studies numerically how accounting
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Experimental investigation of a new solar panels cleaning system using ionic wind produced by corona discharge J. Electrostat. (IF 1.8) Pub Date : 2023-06-20 Amar Tilmatine, Nezha Kadous, Khelifa Yanallah, Yassine Bellebna, Zeid Bendaoudi, Ayyoub Zouaghi
This paper aims to study a new solar panels cleaning device based on the ionic wind produced by corona discharge plasma. The device comprises a high-voltage electrode composed of a series of parallel sharp needles and a grounded frame electrode. The system is moved using two driven wheels fixed at its extremities, and is placed at a few millimetres above the solar panel surface at. The cleaning operation
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Electric field and EHD flow in longitudinal wire-to-plate DC and DBD electrostatic precipitators: A numerical study J. Electrostat. (IF 1.8) Pub Date : 2023-06-14 Orcun Ekin, Kazimierz Adamiak
In this study, the electrical and electrohydrodynamic (EHD) flow properties of a wire-to-plate electrostatic precipitator with a longitudinal wire electrode are investigated through a numerical simulation. The two modes of operation are considered: DC and AC supply voltages. The AC model features dielectric layers over collecting electrodes, hence a dielectric barrier discharge mechanism. To predict
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Parametric study of DBD plasma actuator for heat transfer enhancement in flow over a flat plate at low Reynolds numbers J. Electrostat. (IF 1.8) Pub Date : 2023-06-06 Hesam Moayedi, Nima Amanifard, Hamed Mohaddes Deylami
The present study intends to find the optimal configurations of Dielectric-Barrier-Discharge (DBD) plasma actuators to augment the thermo-hydraulic performance in air flow over a flat plate at low Reynolds numbers. A range of parametric studies are conducted to determine the impact of the major contributing variables; Reynolds number, voltage frequency, and the applied voltage of the DBD actuator,
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On the minimum and maximum flowrate of electrospraying: A practical approach, based on fundamentals, for design purposes J. Electrostat. (IF 1.8) Pub Date : 2023-06-02 J.C.M. Marijnissen, C.U. Yurteri, S.W. Karuga, R.P.A. Hartman
The minimum and maximum flow rates (Qmin, Qmax) limit the operational window of electrospraying (cone-jet mode). Literature does not give a general, experimentally proven, useable formula. We derived with fundamental physics and curve fitting a relation between Qmin and Qo (=εoγρK) , for Newtonian liquids with low/moderately high viscosities. The formula is corroborated by own experiments and data
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Electrostatic discharge charge transfer measurements in electrostatic hazard evaluation J. Electrostat. (IF 1.8) Pub Date : 2023-06-01 J.M. Smallwood
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The effect of combining wavy and W-type collecting electrodes on the properties of electrostatic precipitators J. Electrostat. (IF 1.8) Pub Date : 2023-05-29 Angel Asipuela González, Moath Bani Fayyad, Tamás Iváncsy
Electrostatic precipitators (ESPs) are commonly used in industry to remove hazardous particles from flue gases using corona discharge. The optimization of collecting electrodes and corona wires arrangement has a significant influence on the particle collection. Many researchers are attempting to enhance current models in multiple forms. This study seeks to analyze the new design of collecting plates
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Scaling relations for the geometry of wire-to-airfoil atmospheric ionic thrusters J. Electrostat. (IF 1.8) Pub Date : 2023-05-17 Omar Kahol, Marco Belan, Mattia Pacchiani, Domenico Montenero
This work presents a multiparameter experimental investigation on the effects of geometrical parameters on the performance of corona thrusters. A scaling model is presented in order to define physically consistent reference values and dimensionless coefficients that describe the main performance indicators. Airfoil collectors of different thickness and chord are tested in a parallel array configuration
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Effect of voltage waveshape and pressure on streamer breakdown criterion for predicting flashover voltage of polymeric insulators J. Electrostat. (IF 1.8) Pub Date : 2023-05-13 Amirtha Gowri R, Usa S
The flashover voltage (FOV) of an outdoor insulator varies with atmospheric conditions and the voltage waveshapes. When altitude increases, the FOV decreases due to various atmospheric factors, mainly the pressure. The FOV of the insulator changes under normal operating conditions and transient over-voltages. As the flashover is dominated by streamer mechanisms, this study addresses the application
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A vibratory-type triboelectric charging device design of experiments based modelling for controllable and uncontrollable parameters effect study J. Electrostat. (IF 1.8) Pub Date : 2023-05-07 Salah Atroune, Nabil Taib, Boukhalfa Bendahmane, Amar Tilmatine, Lucian Dascalescu
The aim of the present paper is to study the effect of the controllable and uncontrollable parameters on the charge per mass ratio of the triboelectrical vibratory charging device. The controllable parameters are related to the device, which are the feed rate, the particle velocity, and the length of the vibrating plate. The uncontrollable ones are those related to the intrinsic properties of the materials