水中脉冲电弧放电等离子体通道直接冲击压力特性
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摘要
为了明确水中脉冲电弧放电等离子体通道的直接冲击特性,以不锈钢平板作为受冲击对象,利用超声微观分析确定不同放电条件下平板表面冲击点的蚀坑面积及分布情况,并采用无源测量和数值仿真的方法分析了等离子体通道冲击平板的压力特性。实验结果表明:在5mm放电间隙条件下,冲击点分布在以平板中心为圆心的半径5 mm圆形区域内,并且冲击受力面积和峰值冲击力随着放电电压的升高而增大;在20 kV放电电压条件下,冲击点分布随着放电间隙的增加而疏散且受力面积逐步减小,在10mm放电间隙下得到最大峰值冲击力约为34MPa。该研究增进了对水中脉冲电弧放电等离子体通道直接冲击特性的认识,并为其有效应用提供了参考。
In order to clarify the direct impact characteristics of pulsed arc discharge plasma channel in water, a steel plate were employed as an impacted object, the micro-ultrasound technology was used to analyze the area and distribution of pitting corrosion on the impacted plate surface under different discharge conditions, and the passive measurement as well as simulation methods was adopted to study the characteristics of impact pressure on a steel plate exerted by the plasma channel. Results show that, at the discharge gap of 5 mm, the impact sites distribute in a circular region with a 5 mm radius centered at the plate midpoint, and the maximum impact pressure along with impact area increases with the discharge voltage. Moreover, under the condition of 20 kV discharge voltage, the impact sites distribution becomes disperse, the impact area decreases with the increase of the discharge gap, the discharge gap for the maximum impact pressure is 10 mm, and the pressure value is about 34 MPa. The study enhances the understanding of the direct impact characteristics of pulsed arc discharge plasma channel in water and provides references for its effective applications.
In order to clarify the direct impact characteristics of pulsed arc discharge plasma channel in water, a steel plate were employed as an impacted object, the micro-ultrasound technology was used to analyze the area and distribution of pitting corrosion on the impacted plate surface under different discharge conditions, and the passive measurement as well as simulation methods was adopted to study the characteristics of impact pressure on a steel plate exerted by the plasma channel. Results show that, at the discharge gap of 5 mm, the impact sites distribute in a circular region with a 5 mm radius centered at the plate midpoint, and the maximum impact pressure along with impact area increases with the discharge voltage. Moreover, under the condition of 20 kV discharge voltage, the impact sites distribution becomes disperse, the impact area decreases with the increase of the discharge gap, the discharge gap for the maximum impact pressure is 10 mm, and the pressure value is about 34 MPa. The study enhances the understanding of the direct impact characteristics of pulsed arc discharge plasma channel in water and provides references for its effective applications.
引文
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[17]刘思维,刘毅,李显东,等.水间隙击穿放电模式对激波强度的影响分析[J].中国电机工程学报,2017,37(10):2807-2815.LIU Siwei, LIU Yi, LI Xiandong, et al. Effect of electrical breakdowndischarge modes on shock wave intensity in water[J]. Proceeding ofthe CSEE, 2017, 37(10):2807-2815.
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[20]罗伯特·阿尔伯特·格拉汉姆.固体的冲击波压缩——力学、物理和化学[M].贺红亮,译.北京:科学出版社,2010:24-33.ROBERTAG.Solid shockwavecompression-mechanics, physicsand chemistry[M]. HE Hongliang, Translated. Beijing, China:SciencePress, 2010:24-33.
[21]刘宁,廖振方,蔡珍红,等.电液压脉冲液动力特性分析[J].重庆大学学报,2008,31(2):123-125.LIU Ning, LIAO Zhenfang, CAI Zhenhong, et al. Study on dynamiccharacteristics of electro-hydraulic pulsed liquid[J]. Journal of Chong-qing University, 2008, 31(2):123-125.
[22]李敏堂,严萍,袁伟群,等.强流脉冲对结构体冲击力的数值模拟及试验[J].强激光与粒子束,2010,22(3):659-663.LI Mintang, YAN Ping, YUAN Weiqun, et al. Numerical simulationand experiment of the impact force of the high current pulse on thestructure[J]. Strong Laser and Particle Beam, 2010, 22(3):659-663.
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[2]董冰岩,邓苇,孙宇,等.高压脉冲放电协同纳米催化剂降解苯酚废水[J].高电压技术,2017,43(8):2645-2652.DONGBingyan,DENGWei,SUNYu,etal.Phenolwastewatertreatment by high voltage pulse discharge combined with nanometercatalyst[J]. High Voltage Engineering, 2017, 43(8):2645-2652.
[3]ZHANG Y G, PANG G B, ZHAO Y X, et al. Pulsed electrohydraulicdischargeforwoolfibercleaning[J].JournalofCleanerProduction,2016, 112(1):1033-1039.
[4]赵益昕,庞桂兵,张赟阁,等.液电效应麻脱胶技术[J].大连工业大学学报,2017,36(1):46-49.ZHAOYixin,PANGGuibing,ZHANGYunge,etal.Hempdegumming technology using liquid electric effect[J]. Journal of Da-lian Polytechnic University, 2017, 36(1):46-49.
[5]KOVALCHUK B M, KHARLOV A V, VIZIR V A, et al. High-voltagepulsedgeneratorfordynamicfragmentationofrocks[J].ReviewofScientific Instruments, 2010, 81(10):308-311.
[6]张永民,邱爱慈,周海滨,等.面向化石能源开发的电爆炸冲击波技术研究进展[J].高电压技术,2016,42(4):1009-1017.ZHANG Yongmin, QIU Aici, ZHOU Haibin, et al. Research progressin electrical explosion shockwave technology for developing fossil en-ergy[J]. High Voltage Engineering, 2016, 42(4):1009-1017.
[7]李和平,于达仁,孙文廷,等.大气压放电等离子体研究进展综述[J].高电压技术,2016,42(12):3697-3727.LI Heping, YU Daren, SUN Wenting, et al. State-of-the-art of atmos-pheric discharge plasmas[J]. High Voltage Engineering, 2016, 42(12):3697-3727.
[8]ANDRESU.Developmentandprospectsofmineralliberationbyelectrical pulses[J]. International Journal of Mineral Processing, 2010,97(1):31-38.
[9]刁智俊,赵跃民,段晨龙,等.高压电脉冲破碎电路板的基础研究[J].中国矿业大学学报,2013,42(5):817-823.DIAO Zhijun, ZHAO Yuemin, DUAN Chenlong, et al. Fundamentalstudy of fragmentation of waste printed circuit boards by a high volt-agepulse[J].JournalofChinaUniversityofMining&Technology,2013, 42(5):817-823.
[10]黄国良.高压脉冲放电碎岩的研究[D].武汉:华中科技大学,2013.HUANGGuoliang.Studyonhigh-pressurepulseddischargerock-ing[D].Wuhan,China:HuazhongUniversityofScienceandTechnology, 2013.
[11]STELMASHUK V. Observation of a spark channel generated in waterwith shock wave assistance in plate-to-plate electrode configuration[J].Physics of Plasmas, 2014, 21(1):010703.
[12]CHENW,MAURELO,BORDERIECL,etal.Experimentalandnumericalstudyofshockwavepropagationinwatergeneratedbypulsedarcelectrohydraulicdischarges[J].HeatandMassTransfer,2014, 50(5):673-684.
[13]卢新培,张寒虹,潘垣,等.水中脉冲放电的压力特性研究[J].爆炸与冲击,2001,21(4):282-286.LUXinpei,ZHANGHanhong,PANYuan,etal.Studyonpressurecharacteristics of pulsed discharge in water[J]. Explosion and Shock,2001, 21(4):282-286.
[14]李显冬,刘毅,李志远,等.不均匀电场下水中脉冲放电观测及沉积能量对激波的影响[J].中国电机工程学报,2017,37(10):3028-3036.LI Xiandong, LIU Yi, LI Zhiyuan, et al. Effects of impulsive dischargeobservation and sedimentary energy on shock wave in uneven electricfield[J]. Proceeding of the CSEE, 2017, 37(10):3028-3036.
[15]SUN Y H, ZHOU Y X, JIN M J, et al. New prototype of underwatersound source based on the pulsed corona discharge[J]. Journal of Elec-trostatics, 2005, 63(6-10):969-975.
[16]尹志强,赵金昌,卞德存,等.水中高压脉冲放电的延时特性与电流特性研究[J].太原理工大学学报,2016,47(3):326-330,336.YIN Zhiqiang, ZHAO Jinchang, BIAN Decun, et al. study on delaycharacteristicsandcurrentcharacteristicsofhighvoltagepulsedis-charge in water[J]. Journal of Taiyuan University of Technology, 2016,47(3):326-330, 336.
[17]刘思维,刘毅,李显东,等.水间隙击穿放电模式对激波强度的影响分析[J].中国电机工程学报,2017,37(10):2807-2815.LIU Siwei, LIU Yi, LI Xiandong, et al. Effect of electrical breakdowndischarge modes on shock wave intensity in water[J]. Proceeding ofthe CSEE, 2017, 37(10):2807-2815.
[18]TOMASZ I, MIROSLAW D, JERZY M. Energy emissions of sparkdischargeunderwater[J].EuropeanChemicalBulletin,2014,3(8):811-814.
[19]朱凯,王春梅,张怡茹,等.微细电火花放电通道扩展的研究[J].电加工与模具,2015,1(3):21-25.ZHU Kai, WANG Chunmei, ZHANG Yiru, et al. Study on the expan-sion of micro-spark discharge channel[J]. Electromachining&Mould,2015, 1(3):21-25.
[20]罗伯特·阿尔伯特·格拉汉姆.固体的冲击波压缩——力学、物理和化学[M].贺红亮,译.北京:科学出版社,2010:24-33.ROBERTAG.Solid shockwavecompression-mechanics, physicsand chemistry[M]. HE Hongliang, Translated. Beijing, China:SciencePress, 2010:24-33.
[21]刘宁,廖振方,蔡珍红,等.电液压脉冲液动力特性分析[J].重庆大学学报,2008,31(2):123-125.LIU Ning, LIAO Zhenfang, CAI Zhenhong, et al. Study on dynamiccharacteristics of electro-hydraulic pulsed liquid[J]. Journal of Chong-qing University, 2008, 31(2):123-125.
[22]李敏堂,严萍,袁伟群,等.强流脉冲对结构体冲击力的数值模拟及试验[J].强激光与粒子束,2010,22(3):659-663.LI Mintang, YAN Ping, YUAN Weiqun, et al. Numerical simulationand experiment of the impact force of the high current pulse on thestructure[J]. Strong Laser and Particle Beam, 2010, 22(3):659-663.
[23]HACKERT-OSCHATZCHEN M, KOWALICK M, PAUL R et al.2-Daxisymmetric simulation of the electrochemical machining of internalprecisiongeometries[C]∥TheProceedingsofthe2016COMSOLConference in Munich. Munich, Germany:COMSOL, 2016.
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