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Numerical analysis of coalescence motion of droplets in oil under CPPM electric field CPPM电场作用下油中液滴聚并运动数值分析
IF 1.8 4区 工程技术
Journal of Electrostatics Pub Date : 2023-09-24 DOI: 10.1016/j.elstat.2023.103857
Ye Peng , Yuan Fang , Youyu Zhang , Zhixiang Liao , Bao Yu , Haifeng Gong
{"title":"Numerical analysis of coalescence motion of droplets in oil under CPPM electric field","authors":"Ye Peng ,&nbsp;Yuan Fang ,&nbsp;Youyu Zhang ,&nbsp;Zhixiang Liao ,&nbsp;Bao Yu ,&nbsp;Haifeng Gong","doi":"10.1016/j.elstat.2023.103857","DOIUrl":"https://doi.org/10.1016/j.elstat.2023.103857","url":null,"abstract":"<div><p>In this work, the coalescence<span> 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 width mainly affects the droplet movement process, and has little effect on the droplet coalescing time. The electric field strength affects the droplet coalescence efficiency, and the greater the electric field strength, the shorter the droplet coalescing time. This study provides a theoretical basis for the application of CPPM electric field in practice.</span></p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49753573","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
Dielectric barrier discharge as bipolar ion source for aerosol charging: Application to filtration, thin film, and aerosol size measurement 介质阻挡放电作为气溶胶充电的双极离子源:在过滤、薄膜和气溶胶尺寸测量中的应用
IF 1.8 4区 工程技术
Journal of Electrostatics Pub Date : 2023-09-20 DOI: 10.1016/j.elstat.2023.103856
Nicolas Jidenko, Rémi Mathon, Valentin Gérard, Abdul Malik Adédiran, Jean-Pascal Borra
{"title":"Dielectric barrier discharge as bipolar ion source for aerosol charging: Application to filtration, thin film, and aerosol size measurement","authors":"Nicolas Jidenko,&nbsp;Rémi Mathon,&nbsp;Valentin Gérard,&nbsp;Abdul Malik Adédiran,&nbsp;Jean-Pascal Borra","doi":"10.1016/j.elstat.2023.103856","DOIUrl":"https://doi.org/10.1016/j.elstat.2023.103856","url":null,"abstract":"<div><p><span><span><span>We have investigated the potentialities of dielectric<span> 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 control ion production and transport are investigated based on post-discharge </span></span>ion current<span> measurements. Post-DBD aerosol chargers are compared for submicron particle size measurements based on aerosol bipolar charging and electrical mobility analysis. Finally, the principle of </span></span>counterflow extraction of bipolar ion from an atmospheric pressure DBD is established from upstream measurements of positive and negative ion fluxes in air, without neither ozone (&lt;0.1 ppmv) nor </span>nanoparticles.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49753452","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
Ag seed layer effects on SnO2 thin films for triboelectric devices 摩擦电器件用SnO2薄膜的Ag种子层效应
IF 1.8 4区 工程技术
Journal of Electrostatics Pub Date : 2023-09-09 DOI: 10.1016/j.elstat.2023.103855
E. Yüzüak , G. Durak Yüzüak
{"title":"Ag seed layer effects on SnO2 thin films for triboelectric devices","authors":"E. Yüzüak ,&nbsp;G. Durak Yüzüak","doi":"10.1016/j.elstat.2023.103855","DOIUrl":"https://doi.org/10.1016/j.elstat.2023.103855","url":null,"abstract":"<div><p><span>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 (SnO</span><sub>2</sub><span><span><span><span>) thin films<span> with silver (Ag) seed layer properties for </span></span>friction surfaces at TENGs. Investigation of the triboelectric behavior of semi-conductor/polymer coupling structured TENGs formed by thin films with and without Ag seed layer after heat treatment was explored by X-ray diffraction (XRD), </span>electron microscopy<span> (SEM), atomic force microscopy (AFM), and semi-logarithmic current-voltage measurements. Similar structural characterization studies were carried out in </span></span>indium tin oxide<span> coated polyethylene terephthalate film (PET/ITO) for the polymer friction layer. Semiconductor/polymer coupling structured TENG efficiency was evaluated in contact-separation mode and the output voltage-current was enhanced to 80 V, 4 μA, and 210 μW of output power calculated by depositing a SnO</span></span><sub>2</sub> thin film on an Ag seed layer, respectively. Our findings offer a different perspective for synthesizing the semi-conductor/polymer coupling structured TENGs for promising applications in a range of application technologies.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49753450","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
Convective heat transfer enhancement by corona discharge in a wire–cylinder electrostatic precipitator with the water-cooling system 带水冷系统的线筒静电除尘器电晕放电强化对流换热
IF 1.8 4区 工程技术
Journal of Electrostatics Pub Date : 2023-09-01 DOI: 10.1016/j.elstat.2023.103845
Hui Fu , Wenyi Xu , Shuran Li , Zhen Liu , Keping Yan
{"title":"Convective heat transfer enhancement by corona discharge in a wire–cylinder electrostatic precipitator with the water-cooling system","authors":"Hui Fu ,&nbsp;Wenyi Xu ,&nbsp;Shuran Li ,&nbsp;Zhen Liu ,&nbsp;Keping Yan","doi":"10.1016/j.elstat.2023.103845","DOIUrl":"https://doi.org/10.1016/j.elstat.2023.103845","url":null,"abstract":"<div><p><span>Aiming at the current wet plume problem, we present a novel technique to integrate electrostatic precipitator (ESP) and </span>heat exchanger<span><span> in order to simultaneously increase heat exchange efficiency, collect water and control particle emission from flue gases<span>. Unlike the conventional ESP, a lab-scale wire–cylinder type ESP with the collection electrode cooling by water is used for investigations in this paper. Our research indicates that the heat transfer coefficient<span> of the ESP rises with reducing gaseous velocity, increasing applied voltage, corona current or gas temperature. The maximum improvement of the total heat transfer coefficient of 271% was achieved at 0.15 m/s, 80 °C and 16 kV of the negative discharge. Moreover, the presence of Particle matters can enhance the heat transfer coefficient by 9%–16%. The ionic wind, which is quantitatively expressed by electro-hydrodynamic number, plays a key role in modifying the </span></span></span>gas flow<span> patterns and consequently improving the heat exchange coefficient. For lowering the overall energy consumption, it is suggested that the ESP should be operated at a specific mode of low voltage and high current.</span></span></p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49753451","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
Dependence of surface charge density on curvature of surface of conductive body with complicated shape 复杂形状导电体表面曲率与表面电荷密度的关系
IF 1.8 4区 工程技术
Journal of Electrostatics Pub Date : 2023-09-01 DOI: 10.1016/j.elstat.2023.103844
Yulia V. Samukhina , Natalia E. Rusakova , Peter A. Polyakov
{"title":"Dependence of surface charge density on curvature of surface of conductive body with complicated shape","authors":"Yulia V. Samukhina ,&nbsp;Natalia E. Rusakova ,&nbsp;Peter A. Polyakov","doi":"10.1016/j.elstat.2023.103844","DOIUrl":"10.1016/j.elstat.2023.103844","url":null,"abstract":"<div><p>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 tunnel microscopy development and field-ion microscopy.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46598589","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
Convective heat transfer enhancement by corona discharge in a wire–cylinder electrostatic precipitator with the water-cooling system 带水冷系统的线筒静电除尘器中电晕放电增强对流换热
IF 1.8 4区 工程技术
Journal of Electrostatics Pub Date : 2023-09-01 DOI: 10.2139/ssrn.4474204
H. Fu, Wenyi Xu, Shuran Li, Zhen Liu, K. Yan
{"title":"Convective heat transfer enhancement by corona discharge in a wire–cylinder electrostatic precipitator with the water-cooling system","authors":"H. Fu, Wenyi Xu, Shuran Li, Zhen Liu, K. Yan","doi":"10.2139/ssrn.4474204","DOIUrl":"https://doi.org/10.2139/ssrn.4474204","url":null,"abstract":"","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41374371","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
Experimental study on streamer-leader transition characteristics of sphere-plane gap in valve hall under positive switching impulse voltage 正开关脉冲电压下阀厅球平面间隙流-引线过渡特性实验研究
IF 1.8 4区 工程技术
Journal of Electrostatics Pub Date : 2023-09-01 DOI: 10.1016/j.elstat.2023.103829
Yaqi Fang , Suhan Mao , Bingsen Yang , Hongxian Tu , Zhi Zhang , Junkang Fang , Xiaoxing Zhang
{"title":"Experimental study on streamer-leader transition characteristics of sphere-plane gap in valve hall under positive switching impulse voltage","authors":"Yaqi Fang ,&nbsp;Suhan Mao ,&nbsp;Bingsen Yang ,&nbsp;Hongxian Tu ,&nbsp;Zhi Zhang ,&nbsp;Junkang Fang ,&nbsp;Xiaoxing Zhang","doi":"10.1016/j.elstat.2023.103829","DOIUrl":"10.1016/j.elstat.2023.103829","url":null,"abstract":"<div><p>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 and 0.4 m under positive switching impulse voltage. The experimental comparative analysis of the discharge process of streamer-leader transition, and the physical parameters such as leader velocity and the amount of injected charge are calculated. The results show that the streamer to leader transition process is accelerated as the spherical electrode diameter increases. The leader velocity of sphere-plane gap is almost consistent with that of rod-plane gap. And the charge injected into initial streamer is much high than that of rod-plane gap.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41618634","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
Electrostatic discharge charge transfer measurements in electrostatic hazard evaluation 静电危害评价中静电放电电荷转移的测量
IF 1.8 4区 工程技术
Journal of Electrostatics Pub Date : 2023-09-01 DOI: 10.1016/j.elstat.2023.103817
J.M. Smallwood
{"title":"Electrostatic discharge charge transfer measurements in electrostatic hazard evaluation","authors":"J.M. Smallwood","doi":"10.1016/j.elstat.2023.103817","DOIUrl":"10.1016/j.elstat.2023.103817","url":null,"abstract":"<div><p>Ignition risk is often evaluated using the charged transferred in a discharge from the object or material under evaluation. Charge transfer measurements can also be used to evaluate the capacitance of small conducting items that can be otherwise difficult to measure. The paper reviews methods of charge transfer measurement in electrostatic<span> discharge often used for capacitance measurement or electrostatic hazard evaluation. Advantages and disadvantages of each method are discussed. Examples documents that specify or rely on charge transfer measurements include IEC 60079-32-1, IEC 60079-32-2, ISO 80079-36 and EN 50050-1.</span></p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42045773","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
Lightning current analysis for tall tower strike using 3D FEM 用三维有限元法分析高塔雷击中的雷电电流
IF 1.8 4区 工程技术
Journal of Electrostatics Pub Date : 2023-09-01 DOI: 10.1016/j.elstat.2023.103840
Md. Kamal Hossain , Md. Faruque Hossain
{"title":"Lightning current analysis for tall tower strike using 3D FEM","authors":"Md. Kamal Hossain ,&nbsp;Md. Faruque Hossain","doi":"10.1016/j.elstat.2023.103840","DOIUrl":"10.1016/j.elstat.2023.103840","url":null,"abstract":"<div><p>In this study, the lightning current waveforms<span> at the middle and bottom positions for 60 m tall tower strikes were observed using the three-dimensional finite element method<span> (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 using scattering boundary conditions to avoid wave reflections and limit computation time. We have considered ground conductivity of 5.98 e7 S/m, 0.1 S/m, and 0.01 S/m, respectively, in our model. Base current speeds were considered in our model to be equal to the velocity of light, half of the velocity of light, and one-third of the velocity of light, respectively. This investigation will aid in developing a lightning protection strategy and a better understanding of the properties of lightning.</span></span></p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48017012","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
The effect of the corona wire distribution with W-type of collecting plates on the characteristics of electrostatic precipitators w型集电板电晕线分布对静电除尘器特性的影响
IF 1.8 4区 工程技术
Journal of Electrostatics Pub Date : 2023-09-01 DOI: 10.1016/j.elstat.2023.103841
Moath Bani Fayyad, Angel Asipuela, Tamás Iváncsy
{"title":"The effect of the corona wire distribution with W-type of collecting plates on the characteristics of electrostatic precipitators","authors":"Moath Bani Fayyad,&nbsp;Angel Asipuela,&nbsp;Tamás Iváncsy","doi":"10.1016/j.elstat.2023.103841","DOIUrl":"10.1016/j.elstat.2023.103841","url":null,"abstract":"<div><p>Electrostatic precipitators (ESPs) are commonly applied to eliminate particles in various industrial sectors. A numerical study is conducted to evaluate the use of different arrangements of W-type collecting plates compared to flat plates (FPs) for a single stage of ESP. The modeling was done for six different ESP cases, and the W-type results obtained are compared to FPs to determine the consequence of corona wires spacing at different ratios of <span><math><mrow><msub><mrow><mi>L</mi></mrow><mrow><mi>w</mi><mi>w</mi></mrow></msub><mo>/</mo><msub><mrow><mi>L</mi></mrow><mrow><mi>w</mi><mi>p</mi></mrow></msub></mrow></math></span> (<span><math><msub><mrow><mi>L</mi></mrow><mrow><mi>w</mi><mi>w</mi></mrow></msub></math></span> is a wire–wire space and <span><math><msub><mrow><mi>L</mi></mrow><mrow><mi>w</mi><mi>p</mi></mrow></msub></math></span> is a wire–plate space) on the distribution especially of the electrical field, space charge density, and particle collection. The electric field close to the grounded collecting plates continued to rise when <span><math><mrow><msub><mrow><mi>L</mi></mrow><mrow><mi>w</mi><mi>w</mi></mrow></msub><mo>/</mo><msub><mrow><mi>L</mi></mrow><mrow><mi>w</mi><mi>p</mi></mrow></msub></mrow></math></span> is reduced for both shapes. Furthermore, when compared to FPs, the use of W-types improves particle collection efficiency.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45435649","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
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