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等离子体科学和技术（英文版）
等离子体科学和技术（英文版）

万元熙、谢纪康

月刊

1009-0630

pst@ipp.ac.cn

0551-5591617，5593176

230031

合肥 中国科学院等离子体物理研究所PST编辑部

等离子体科学和技术（英文版）/Journal Plasma Science and TechnologyCSCD北大核心EISCI
查看更多>>“Plasma Science & Technology”（等离子体科学和技术）是中国科学院等离子体物理研究所主办的英文版学术期刊。其宗旨是向国内外报导我国等离子体科学界和国外科学家在高温等离子体、低温等离子体、天体空间等离子体、放电等离子体和激光等离子体等各个领域在基础研究、实验探索、装置建设和应用开发中所取得的具有新意的学术成果或阶段性成果，并刊登反映这些学科国际、国内发展新方向、新动态的综述，以及与等离子体有关的交叉学科和应用方面的最新成就等。
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    Airfoil friction drag reduction based on grid-type and super-dense array plasma actuators

    方子淇宗豪华吴云梁华...
    94-103页
    查看更多>>摘要：To improve the cruise flight performance of aircraft,two new configurations of plasma actuators(grid-type and super-dense array)were investigated to reduce the turbulent skin friction drag of a low-speed airfoil.The induced jet characteristics of the two actuators in quiescent air were diagnosed with high-speed particle image velocimetry(PIV),and their drag reduction efficiencies were examined under different operating conditions in a wind tunnel.The results showed that the grid-type plasma actuator was capable of producing a wall-normal jet array(peak magnitude:1.07 m/s)similar to that generated in a micro-blowing technique,while the super-dense array plasma actuator created a wavy wall-parallel jet(magnitude:0.94 m/s)due to the discrete spanwise electrostatic forces.Under a comparable electrical power consumption level,the super-dense array plasma actuator array significantly outperformed the grid-type configuration,reducing the total airfoil friction drag by approximately 22％at a free-stream velocity of 20 m/s.The magnitude of drag reduction was proportional to the dimensionless jet velocity ratio(r),and a threshold r=0.014 existed under which little impact on airfoil drag could be discerned.
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    Non-thermal atmospheric-pressure posi-tive pulsating corona discharge in degrada-tion of textile dye Reactive Blue 19 enhanced by Bi2O3 catalyst

    Milica PETROVI?Dragan RADIVOJEVI?Sa?a RAN?EVNena VELINOV...
    104-113页
    查看更多>>摘要：In this work,monoclinic Bi2O3 was applied for the first time,to the best of our knowledge,as a catalyst in the process of dye degradation by a non-thermal atmospheric-pressure positive pulsating corona discharge.The research focused on the interaction of the plasma-generated species and the catalyst,as well as the role of the catalyst in the degradation process.Plasma decomposition of the anthraquinone reactive dye Reactive Blue 19(RB 19)was performed in a self-made reactor system.Bi2O3 was prepared by electrodeposition followed by thermal treatment,and characterized by x-ray diffraction,scanning electron microscopy and energy-dispersive x-ray techniques.It was observed that the catalyst promoted decomposition of plasma-generated H2O2 into·OH radicals,the principal dye-degrading reagent,which further attacked the dye molecules.The catalyst improved the decolorization rate by 2.5 times,the energy yield by 93.4％and total organic carbon removal by 7.1％.Excitation of the catalyst mostly occurred through strikes by plasma-generated reactive ions and radical species from the air,accelerated by the electric field,as well as by fast electrons with an energy of up to 15 eV generated by the streamers reaching the liquid surface.These strikes transferred the energy to the catalyst and created the electrons and holes,which further reacted with H2O2 and water,producing·OH radicals.This was indentified as the primary role of the catalyst in this process.Decolorization reactions followed pseudo first-order kinetics.Production of H2O2 and the dye degradation rate increased with increase in the input voltage.The optimal catalyst dose was 500 mg·dm-3.The decolorization rate was a little lower in river water compared with that in deionized water due to the side reactions of·OH radicals with organic matter and inorganic ions dissolved in the river water.
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    Phase field model for electric-thermal coupled discharge breakdown of polyimide nanocomposites under high frequency electrical stress

    韩智云李庆民李俊科王梦溪...
    114-124页
    查看更多>>摘要：In contrast to conventional transformers,power electronic transformers,as an integral component of new energy power system,are often subjected to high-frequency and transient electrical stresses,leading to heightened concerns regarding insulation failures.Meanwhile,the underlying mechanism behind discharge breakdown failure and nanofiller enhancement under high-frequency electrical stress remains unclear.An electric-thermal coupled discharge breakdown phase field model was constructed to study the evolution of the breakdown path in polyimide nanocomposite insulation subjected to high-frequency stress.The investigation focused on analyzing the effect of various factors,including frequency,temperature,and nanofiller shape,on the breakdown path of Polyimide(PI)composites.Additionally,it elucidated the enhancement mechanism of nano-modified composite insulation at the mesoscopic scale.The results indicated that with increasing frequency and temperature,the discharge breakdown path demonstrates accelerated development,accompanied by a gradual dominance of Joule heat energy.This enhancement is attributed to the dispersed electric field distribution and the hindering effect of the nanosheets.The research findings offer a theoretical foundation and methodological framework to inform the optimal design and performance management of new insulating materials utilized in high-frequency power equipment.
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    Experimental study on the effect of H2O and O2 on the degradation of SF6 by pulsed dielectric barrier discharge

    李亚龙万昆王宇非张晓星...
    125-131页
    查看更多>>摘要：SF6 has excellent insulation performance and arc extinguishing ability,and is widely used in the power industry.However,its global warming potential is about 23,500 times that of CO2,it can exist stably in the atmosphere,it is not easily degradable and is of great potential harm to the environment.Based on pulsed dielectric barrier discharge plasma technology,the effects of H2O and O2 on the degradation of SF6 were studied.Studies have shown that H2O can effectively promote the decomposition of SF6 and improve its degradation rate and energy efficiency of degradation.Under the action of a pulse input voltage and input frequency of 15 kV and 15 kHz,respectively,when H2O is added alone the effect of 1％H2O is the best,and the rate and energy efficiency of degradation of SF6 reach their maximum values,which are 91.9％and 8.25 g kWh-1,respectively.The synergistic effect of H2O and O2 on the degradation of SF6 was similar to that of H2O.When the concentration of H2O and O2 was 1％,the system obtained the best rate and energy efficiency of degradation,namely 89.7％and 8.05 g kWh-1,respectively.At the same time,different external gases exhibit different capabilities to regulate decomposition products.The addition of H2O can effectively improve the selectivity of SO2.Under the synergistic effect of H2O and O2,with increase in O2 concentration the degradation products gradually transformed into SO2F2.From the perspective of harmless treatment of the degradation products of SF6,the addition of O2 during the SF6 degradation process should be avoided.
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    Detection of Al,Mg,Ca,and Zn in copper slag by LIBS combined with calibration curve and PLSR methods

    贾军伟刘志峰潘从元薛骅骎...
    132-138页
    查看更多>>摘要：The precise measurement of Al,Mg,Ca,and Zn composition in copper slag is crucial for effective process control of copper pyrometallurgy.In this study,a remote laser-induced breakdown spectroscopy(LIBS)system was utilized for the spectral analysis of copper slag samples at a distance of 2.5 m.The composition of copper slag was then analyzed using both the calibration curve(CC)method and the partial least squares regression(PLSR)analysis method based on the characteristic spectral intensity ratio.The performance of the two analysis methods was gauged through the determination coefficient(R2),average relative error(ARE),root mean square error of calibration(RMSEC),and root mean square error of prediction(RMSEP).The results demonstrate that the PLSR method significantly improved both R2 for the calibration and test sets while reducing ARE,RMSEC,and RMSEP by 50％compared to the CC method.The results suggest that the combination of LIBS and PLSR is a viable approach for effectively detecting the elemental concentration in copper slag and holds potential for online detection of the elemental composition of high-temperature molten copper slag.
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