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Etienne Michaux and Stéphane Mazouffre
Measurements of ion speed in the plume of a pulsed high-current vacuum arc thruster were performed by means of electrostatic probes. The probes were designed to provide direct speed measurements with minimum disturbance on the plasma jet. Typical mean va...
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Jitendra Kumar Vyas, Muthiah Perumal and Tommaso Moramarco
Streamflow measurements during high floods is a challenge for which the World Meteorological Organization fosters the development of innovative technologies for achieving an accurate estimation of the discharge. The use of non-contact sensors for monitor...
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Wenxia Sima, Chilong Jiang, Paul Lewin, Qing Yang and Tao Yuan
The partial discharge (PD) process in liquid dielectrics is influenced by several factors. Although the PD current contains the information representing the discharge process during the PD event, it is difficult to determine the detailed dynamics of what...
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Feng Xu, Sanmei Zhao, Bin Li, Haihua Li, Zhongqian Ling, Guangxue Zhang and Maosheng Liu
Desulfurization wastewater is industrial wastewater with a high salt content, high metal ions, and high hardness produced by flue gas desulfurization of the limestone-gypsum method in coal-fired power plants. This paper summarizes the source of desulfuri...
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Yao Li, Liang Qin, Dezheng Yang, Li Zhang and Wenchun Wang
In this paper, the packed bed dielectric barrier discharge (DBD) with needle-plate electrode configuration is presented to study the effects of electrical parameters, such as pulse duration and pulse rising and falling time, on discharge characteristics ...
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Kyung-Hoon Jang, Sang-Won Seo and Dong-Jin Kim
In this paper, we present the optimized air space of the lightning protection rod (SK-AOR380) with the function of a charge transfer system (CTS). For evaluation of CTS in the laboratory setting, some studies have focused on the modification of the struc...
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Chengcheng Hou, Jianrong Zhu, Ju Huang and Xinyue Cheng
Estuaries are areas where runoff and tide interact. Tidal waves propagate upstream from river mouths and produce tidal currents and tidal level variations along rivers. Based on the hydrological frequency analysis of river discharge in the dry season and...
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Weigen Chen, Wanping Wang, Qing Xia, Bing Luo and Licheng Li
In this paper, an artificial pollution test is carried out to study the leakage current of porcelain insulators. Fractal theory is adopted to extract the characteristics hidden in leakage current waveforms. Fractal dimensions of the leakage current for t...
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Matthew Baird, Thomas Kerber, Ron McGee-Sinclair and Kristina Lemmer
Hall effect thrusters (HETs) are an increasingly utilized proportion of electric propulsion devices due to their high thrust-to-power ratio. To enable an accessible research thruster, our team used inexpensive materials and simplified structures to fabri...
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Vittorio Giannetti, Manuel Martín Saravia, Luca Leporini, Simone Camarri and Tommaso Andreussi
One of the main oscillatory modes found ubiquitously in Hall thrusters is the so-called breathing mode. This is recognized as a relatively low-frequency (10?30 kHz), longitudinal oscillation of the discharge current and plasma parameters. In this paper, ...
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Zhenshan Xu, Ebenezer Otoo, Yongping Chen and Hongwei Ding
The multiport diffuser effluent discharge facilities constructed beneath the coastal waters were simplified in the laboratory as twin buoyant jets in a wavy cross-flow environment. The near-field flow structure of twin jets was studied by series of exper...
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Xian Wang, Zhengxiang Song, Kun Yang, Xuyang Yin, Yingsan Geng and Jianhua Wang
Lithium-bismuth liquid metal batteries have much potential for stationary energy storage applications, with characteristics such as a large capacity, high energy density, low cost, long life-span and an ability for high current charge and discharge. Howe...
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Shenghui Wang, Jiamin Mai and Lihong Wang
For investigating the relationship between the surface corona discharge of a DC wire and other influencing factors, a hybrid numerical model based on a fluid-chemical reaction was proposed to simulate the discharge process at the tip defect of the wire. ...
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Luca Leporini, Ferhat Yaman, Tommaso Andreussi and Vittorio Giannetti
Hall thrusters are plasma-based devices that have established themselves as one of the most attractive and mature electric propulsion technologies for space applications. These devices often operate in a regime characterized by low frequency, large ampli...
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Antonio Piragino, Farbod Faraji, Maryam Reza, Eugenio Ferrato, Annalisa Piraino and Tommaso Andreussi
The paper reports the characterization results of a 20 kW-class magnetically shielded Hall thruster in three different configurations and operating with a centrally mounted cathode. The characterization was carried out at two different pumping speeds in ...
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The zinc/bromine (Zn/Br2) flow battery is an attractive rechargeable system for grid-scale energy storage because of its inherent chemical simplicity, high degree of electrochemical reversibility at the electrodes, good energy density, and abu...
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Nasim Hosseini, Jacinda Johnston and Karl-Erich Lindenschmidt
Flows along the upper Qu?Appelle River are expected to increase in the future via increased discharge from Lake Diefenbaker to meet the demands of increased agricultural and industrial activity and population growth in southern Saskatchewan. This increas...
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Nasim Hosseini, Jacinda Johnston, Karl-Erich Lindenschmidt
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Flows along the upper Qu?Appelle River are expected to increase in the future via increased discharge from Lake Diefenbaker to meet the demands of increased agricultural and industrial activity and population growth in southern Saskatchewan. This increas...
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Daehyun Kim, Keunhwi Koo, Jae Jin Jeong, Taedong Goh and Sang Woo Kim
A second-order discrete-time sliding mode observer (DSMO)-based method is proposed to estimate the state of charge (SOC) of a Li-ion battery. Unlike the first-order sliding mode approach, the proposed method eliminates the chattering phenomenon in SOC es...
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Vijaykumar S. Jatti, Rahul B. Dhabale, Akshansh Mishra, Nitin K. Khedkar, Vinaykumar S. Jatti and Ashwini V. Jatti
The advancement in technology has attracted researchers to electric discharge machining (EDM) for providing a practical solution for overcoming the limitations of conventional machining. The current study focused on predicting the Material Removal Rate (...
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