Journal of Electrostatics最新文献_第5页

Analysis of the electromagnetic effects on the large floating roof oil tanks by nearby lightning strike based on TLM 基于 TLM 的附近雷击对大型浮顶油罐的电磁效应分析

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2024-04-27 DOI: 10.1016/j.elstat.2024.103927

Hamed Neyshabouri, Mohsen Niasati

{"title":"Analysis of the electromagnetic effects on the large floating roof oil tanks by nearby lightning strike based on TLM","authors":"Hamed Neyshabouri, Mohsen Niasati","doi":"10.1016/j.elstat.2024.103927","DOIUrl":"https://doi.org/10.1016/j.elstat.2024.103927","url":null,"abstract":"<div><p>Lightning fire is one of the biggest dangers for chemical and petrochemical storage tank farms, particularly in floating roof oil tanks (FROTs). To improve the lightning protection of FROTs, the process of floating roof tanks affected by lightning is analyzed. Lightning inductive effects can result in the undesired operation of the above-ground storage tank equipment and endanger exploitation safety. The time domain finite element analysis based on the transmission line model (TLM) method is regarded as a numerical technique to solve field problems by implementing circuit equivalents. This study aims to analyze lightning strike characteristics using the Heidler current function and simulate electromagnetic field strength (EMFS) distribution and surface current density (SCD). Calculation of minimum possible effective strike distance and shielding effectiveness (SE) is performed. Parametric modeling ensures accurate modeling of the roof's bypass conductor to the shell. By utilizing the Parameter Sweep technique, multiple simulations can be carried out with varying structure parameter values. This approach ensures optimal efficiency and accuracy in the results obtained.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"129 ","pages":"Article 103927"},"PeriodicalIF":1.8,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140650402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling of the shape of Taylor cone in EHD printing based on backpropagation neural network and genetic algorithm 基于反向传播神经网络和遗传算法的电涡流印刷泰勒锥形状建模

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2024-04-17 DOI: 10.1016/j.elstat.2024.103928

Yang Cheng , Ran Huang , Jianfeng Yu

{"title":"Modeling of the shape of Taylor cone in EHD printing based on backpropagation neural network and genetic algorithm","authors":"Yang Cheng , Ran Huang , Jianfeng Yu","doi":"10.1016/j.elstat.2024.103928","DOIUrl":"https://doi.org/10.1016/j.elstat.2024.103928","url":null,"abstract":"<div><p>Electrohydrodynamic (EHD) printing has been recognized as a promising additive manufacturing technology with superior pattern resolution and economic viability. The shape of Taylor cone is deemed a pivotal element for the amplification of deposition efficiency, and the maintenance of consistent operational steadiness in EHD printing. The correlations between diverse operating parameters and the shape of Taylor cone are presently not well investigated. In this paper, modeling of relationships between operating parameters and the shape of Taylor cone was conducted with a backpropagation neural network (BPNN) and a genetic algorithm optimized backpropagation (GA-BP) neural network. Taylor cone semi-vertical angle and the meniscus height were employed as two indexes to characterize the shape of Taylor cone. The prediction accuracies of BPNN model and GA-BP model were 92.79 % and 95.46 %, respectively. The GA-BP model demonstrated higher precision in forecasting the shape of Taylor cone. A predictive framework for the shape of Taylor cone was proposed, which provided a practical tool for process optimization in EHD printing.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"129 ","pages":"Article 103928"},"PeriodicalIF":1.8,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140606801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular dynamics promotes study of droplet electrocoalescence: A mini-review 分子动力学促进液滴电凝聚研究：微型综述

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2024-04-16 DOI: 10.1016/j.elstat.2024.103929

Lingbo Huang , Sai Huang , Ling Chen , Boping Ren , Ping OuYang , YuHan Li

引用次数: 0

Characterization of size-resolved charge distributions for triboelectrically charged microparticles via electrical mobility analysis coupled to optical particle spectrometry 通过电迁移率分析耦合光学粒子光谱法确定三电荷微粒电荷分布的尺寸分辨特征

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2024-04-13 DOI: 10.1016/j.elstat.2024.103924

Rahaf A. Bahajry , Sarah E. Ley , José Morán , Charles I. Skillman , Kevin M. Romagnoli , Christopher J. Hogan Jr.

引用次数: 0

Recent advances in electrostatic precipitation of particles from flue gases generated by domestic heating appliances. A brief outlook 从家用取暖设备产生的烟气中静电析出微粒的最新进展。简要展望

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2024-04-05 DOI: 10.1016/j.elstat.2024.103922

Anatol Jaworek, Artur Marchewicz, Arkadiusz T. Sobczyk, Andrzej Krupa, Tadeusz Czech

{"title":"Recent advances in electrostatic precipitation of particles from flue gases generated by domestic heating appliances. A brief outlook","authors":"Anatol Jaworek, Artur Marchewicz, Arkadiusz T. Sobczyk, Andrzej Krupa, Tadeusz Czech","doi":"10.1016/j.elstat.2024.103922","DOIUrl":"https://doi.org/10.1016/j.elstat.2024.103922","url":null,"abstract":"<div><p>Winter season is the time of increased emission of exhaust gases from household heating appliances containing particulate matter (PM) and other noxious contaminants. Many old buildings and single houses, particularly at rural and small town regions, still use stoves, fireplaces or ovens to flat heating. Besides qualified fuels like coal or biomass pellets, all kinds of wastes are also burned in many cases, producing not only mineral particles but also toxic volatile organic compounds or other carcinogenic species. To solve the problem of high level of emission of solid particles and organic-compound molecules different constructions of electrostatic precipitators, which can remove such particles, have been developed in last two decades, which were designed to operate downstream of small domestic boilers. Such electrostatic precipitator must comply with the ECODESIGN emission limits, which set the emission level at 20 mg/m<sup>3</sup>, for biomass. The mass collection efficiency should be higher than 95 % to obtain this emission level. This brief review presents different constructions of electrostatic precipitators designed to be used for the removal of fly ash particles from domestic heating appliances.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"129 ","pages":"Article 103922"},"PeriodicalIF":1.8,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140350496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of uniform charge assumption by investigating electrostatic charge distribution and potential during container filling: A numerical study 通过研究容器填充过程中的静电电荷分布和电势，评估均匀电荷假设：数值研究

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2024-04-05 DOI: 10.1016/j.elstat.2024.103925

Manoochehr Fathollahi , Sadreddin Mahmoodkalayeh

引用次数: 0

Oscillation suppression for pulsed arc electrohydraulic discharges based on plasma impedance model 基于等离子体阻抗模型的脉冲电弧电液放电振荡抑制技术

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2024-04-04 DOI: 10.1016/j.elstat.2024.103923

Yingbo Yu, Zhongjian Kang

{"title":"Oscillation suppression for pulsed arc electrohydraulic discharges based on plasma impedance model","authors":"Yingbo Yu, Zhongjian Kang","doi":"10.1016/j.elstat.2024.103923","DOIUrl":"https://doi.org/10.1016/j.elstat.2024.103923","url":null,"abstract":"<div><p>The circuit oscillation generated during the process of pulsed arc electrohydraulic discharge can prolong the discharge time and pose potential hazards to the withstand voltage of the discharge equipment. To enhance the anti-oscillation performance of the equipment, the structure of the gas spark switch was analyzed and an improved pulse power switch for suppressing circuit oscillation was designed. Firstly, a two-dimensional axisymmetric simulation model of the gas spark switch was established by COMSOL software, and a theoretical model to express the impedance of the plasma channel through the series combination of resistance and inductance was put forward. Then, the correctness of the theoretical model was proved by the nonlinear regression method considering the capacitance effect of plasma discharge, and the results show that the theoretical model almost coincides with the actual discharge waveform, with a fitting rate of 99.73%. Finally, a thyristor-based pulse power switch was designed, and an electrohydraulic discharge experiment was carried out. The experimental results show that the designed switch can reliably control the output of the high-voltage pulses even if the repetitive discharge frequency is higher than 60 Hz under 8.5 kV voltage. Furthermore, the circuit oscillation process was suppressed, and the oscillation time was reduced from 242μs to 39 μs, with a decrease of 83.88 %. This study has potential application value in underwater high-voltage discharge applications.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"129 ","pages":"Article 103923"},"PeriodicalIF":1.8,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140343810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An analytical model-based assessment of Wet Electrostatic Scrubbing for mitigating fine and ultrafine particles emissions in domestic biomass boilers 基于分析模型的湿式静电除尘评估，以减少家用生物质锅炉中的细颗粒和超细颗粒排放

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2024-03-27 DOI: 10.1016/j.elstat.2024.103921

Arianna Parisi, Francesco Di Natale

引用次数: 0

Design and analysis of triboelectric energy harvester with an application in self-powered smart mask 应用于自供电智能面罩的三电能收集器的设计与分析

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2024-03-25 DOI: 10.1016/j.elstat.2024.103917

Souvik Khan, Banibrata Mukherjee

{"title":"Design and analysis of triboelectric energy harvester with an application in self-powered smart mask","authors":"Souvik Khan, Banibrata Mukherjee","doi":"10.1016/j.elstat.2024.103917","DOIUrl":"https://doi.org/10.1016/j.elstat.2024.103917","url":null,"abstract":"<div><p>The epidemiological information concerning novel corona virus (SARS-Cov-2) seeks attention nowadays to get an overview of global as well as country-based cases and deaths so far. The utilization of face mask has become evident for the protective measure of mankind to filter out the infiltrating virus from outside. In this paper, we have analysed various triboelectric based energy harvester configurations focusing on its application in self-powered smart mask design to combat SARS-Cov-2. Smart mask will comprise of triboelectric nanogenerator (TENG) and a smart layer to execute electrocution of the infiltrating virus as well as ensure the safety of human being (I < 10 mA). The theoretical investigations and simulation studies are carried out for different triboelectric materials and a comparative analysis is also portrayed in the context of designing self-powered smart mask under different operating modes. It has been observed that polypropylene-poly methyl methacrylate (PP-PMMA) material combination produces an electrical field of 0.9916 MV/m which is sufficient to electrocute the virus without causing harm to human body. Hence the design and comprehensive analysis is carried out considering PP-PMMA combination for various possible modes of operation like constant velocity, constant acceleration, sinusoidal and generic one. Here, respiration is considered as major mechanical input source for TENG whereas other biomechanical activities like talking, chewing are also discussed in the context of self-powered application of smart mask. It has been demonstrated that the physiological activity like chewing and respiration altogether produce a typical input force of 23.65 N which is sufficient to electrocute the incoming virus without causing any hazard to human health.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"129 ","pages":"Article 103917"},"PeriodicalIF":1.8,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140290537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Extraction efficacy of newly designed electric fields on red beetroot samples 新设计的电场对红色甜菜根样品的提取效果

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2024-03-23 DOI: 10.1016/j.elstat.2024.103919

Melih Çoban , Damla Nur Türker , Murat Fidan , Gulsun Akdemir Evrendilek

引用次数: 0