初始种子电子团对短空气间隙流注放电行为的影响
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摘要
流注放电过程中初始种子电子团的形成数量及位置具有随机性,为揭示初始种子电子团对流注放电行为的影响,建立流体动力学-化学反应混合模型,数值仿真大气压下棒-板间隙为5 mm的流注放电过程。模型包括电子、正负离子连续性方程、电子平均能量方程和电场的泊松方程以及23种粒子间化学反应。分别在模型中对密度峰值和分布位置预设置3个不同数值,研究初始种子电子团密度峰值和分布位置对空气间隙流注放电行为的影响。结果表明:初始种子电子团密度峰值的增加只会加速流注的形成,不会影响流注的时空变化规律;而分布位置的改变会影响流注的时空发展特性,初始位置与棒电极的距离越远,形成的流注到达板电极的时间愈短。
The number and location of initial seed electron cluster during streamer discharge are random.In order to reveal the influence of initial seed electron cluster on the streamer discharge, a hydrodynamical-chemical reaction mixed model was established to simulate the streamer discharge in5 mm rod-plate gap at atmospheric pressure. The model includes electrons, positive and negative ion continuity equations, electron mean energy equations, Poisson equation of electric field, and 23 kinds of chemical reactions between particles. In the model, the peak density and distribution position are preset three numerical values, and their effect on the streamer discharge was studied. The results show that the increase of the density peak of initial seed electron cluster only accelerates the formation of streamer,and does not affect the space-time change law of streamer. The change of distribution position would affect the space-time development characteristics of streamer, and the farther the distance between initial position and rod electrode, the earlier the streamer gets to the plate electrode.
The number and location of initial seed electron cluster during streamer discharge are random.In order to reveal the influence of initial seed electron cluster on the streamer discharge, a hydrodynamical-chemical reaction mixed model was established to simulate the streamer discharge in5 mm rod-plate gap at atmospheric pressure. The model includes electrons, positive and negative ion continuity equations, electron mean energy equations, Poisson equation of electric field, and 23 kinds of chemical reactions between particles. In the model, the peak density and distribution position are preset three numerical values, and their effect on the streamer discharge was studied. The results show that the increase of the density peak of initial seed electron cluster only accelerates the formation of streamer,and does not affect the space-time change law of streamer. The change of distribution position would affect the space-time development characteristics of streamer, and the farther the distance between initial position and rod electrode, the earlier the streamer gets to the plate electrode.
引文
[1] EBERT U, NIJDAM S, LI C, et al. Review of recent results on streamer discharges and their relevance for sprites and lighting[J]. Journal of Geophysical Research,2010,115(A2):A00E43.
[2] The renardieres group. Positive discharges in long air gap discharge at Les Renardières-1975 results[J]. Electra,1977,53(1):31-153.
[3] HAGELAAR G J M, PITCHFORD L C. Solving the Boltzmann equation to obtain electron transport coefficients and rate coefficients for fluid models[J]. Plasma Sources Science and Technology,2005,14(4):722-733.
[4] DUKO S, EBERT U, WHITE R D, et al. Boltzmann equation analysis of electron transport in a N2-O2streamer discharge[J]. Japanese Journal of Applied Physics,2011,50(8):08JC01.
[5] MORROW R, LOWKEO J J. Streamer propagation in air[J]. Journal of Physics D:Applied Physics,1997,30(4):614-627.
[6]彭庆军,司马文霞,杨庆,等.初始电子浓度对空气中针板间隙正极性流注放电的影响[J].高电压技术,2013,39(1):37-43.
[7]夏喻,李卫国,程宇頔,等.棒尖端外形对低气压下棒-板间隙直流放电特性影响研究[J].绝缘材料,2017,50(11):44-49.
[8]秦楷,潘成,吴锴,等.针-板电极下针尖曲率和铝箔尺寸对放电机理的影响[J].高电压技术,2012,38(7):1777-1784.
[9]惠建峰,关志成,王黎明,等.正直流电晕特性随气压和湿度变化的研究[J].中国电机工程学报,2007,27(33):53-58.
[10]蔡新景,王凯奇,王新新,等.不同湿度下空气的流注放电特性[J].高电压技术,2015,41(2):633-638.
[11]耿庆忠.考虑海拔影响的正极性针环电极模型和交流750kV导线的电晕起始特性研究[D].北京:华北电力大学,2014.
[12] WORMEESTER G, PANCHESHNYI S, LUQUE A, et al.Probing photo-ionization:Simulations of positive streamers in varying N2:O2-mixtures[J]. Journal of Physics D:Applied Physics,2010,43:505201.
[13] KULIKOVSKY A A. Positive streamer in a weak field in air:A moving avalanche-to-streamer transition[J]. Physical Review,1998,57(6):7066-7074.
[14] KULIKOVSKY A A. Positive streamer between parallel plate electrodes in atmospheric pressure air[J]. Journal of Physics D:Applied Physics,1997,30(5):441-450.
[15]廖瑞金,伍飞飞,刘康淋,等.棒-板电极直流负电晕放电脉冲过程中的电子特性研究[J].电工技术学报,2015,30(10):319-329.
[16] RYN O, TETSUJI O. Ozone production process in pulsed positive dielectric barrier discharge[J]. Journal of Physics D:Applied Physics,2007,40(1):176-182.
[17] PANCHESHNYI S, NUDNOVA M, STARIKOVSKII A.Development of a cathode-directed streamer discharge in air at different pressure:Experiment and comparision with direct numerical simulation[J]. Physical Review E,2005,71(1),016407.
[18] WU Feifei, LIAO Ruijin, Wang Ke, et al. Numerical simulation of the characteristics of heavy particles in bar-plate DC positive corona discharge based on a hybrid model[J]. IEEE Transactions on Plasma Science,2014,42(3):868-878.
[19]梁曦东,陈昌渔,周远翔.高电压工程[M].北京:清华大学出版社,2003:19-22.
[20]张赟,曾嵘,黎小林,等.大气中短空气间隙流注放电过程数值仿真[J].中国电机工程学报,2008,28(28):6-12.
[21]张文静.大气压介质阻挡放电物理过程的数值模拟[D].上海:东华大学,2007.
[2] The renardieres group. Positive discharges in long air gap discharge at Les Renardières-1975 results[J]. Electra,1977,53(1):31-153.
[3] HAGELAAR G J M, PITCHFORD L C. Solving the Boltzmann equation to obtain electron transport coefficients and rate coefficients for fluid models[J]. Plasma Sources Science and Technology,2005,14(4):722-733.
[4] DUKO S, EBERT U, WHITE R D, et al. Boltzmann equation analysis of electron transport in a N2-O2streamer discharge[J]. Japanese Journal of Applied Physics,2011,50(8):08JC01.
[5] MORROW R, LOWKEO J J. Streamer propagation in air[J]. Journal of Physics D:Applied Physics,1997,30(4):614-627.
[6]彭庆军,司马文霞,杨庆,等.初始电子浓度对空气中针板间隙正极性流注放电的影响[J].高电压技术,2013,39(1):37-43.
[7]夏喻,李卫国,程宇頔,等.棒尖端外形对低气压下棒-板间隙直流放电特性影响研究[J].绝缘材料,2017,50(11):44-49.
[8]秦楷,潘成,吴锴,等.针-板电极下针尖曲率和铝箔尺寸对放电机理的影响[J].高电压技术,2012,38(7):1777-1784.
[9]惠建峰,关志成,王黎明,等.正直流电晕特性随气压和湿度变化的研究[J].中国电机工程学报,2007,27(33):53-58.
[10]蔡新景,王凯奇,王新新,等.不同湿度下空气的流注放电特性[J].高电压技术,2015,41(2):633-638.
[11]耿庆忠.考虑海拔影响的正极性针环电极模型和交流750kV导线的电晕起始特性研究[D].北京:华北电力大学,2014.
[12] WORMEESTER G, PANCHESHNYI S, LUQUE A, et al.Probing photo-ionization:Simulations of positive streamers in varying N2:O2-mixtures[J]. Journal of Physics D:Applied Physics,2010,43:505201.
[13] KULIKOVSKY A A. Positive streamer in a weak field in air:A moving avalanche-to-streamer transition[J]. Physical Review,1998,57(6):7066-7074.
[14] KULIKOVSKY A A. Positive streamer between parallel plate electrodes in atmospheric pressure air[J]. Journal of Physics D:Applied Physics,1997,30(5):441-450.
[15]廖瑞金,伍飞飞,刘康淋,等.棒-板电极直流负电晕放电脉冲过程中的电子特性研究[J].电工技术学报,2015,30(10):319-329.
[16] RYN O, TETSUJI O. Ozone production process in pulsed positive dielectric barrier discharge[J]. Journal of Physics D:Applied Physics,2007,40(1):176-182.
[17] PANCHESHNYI S, NUDNOVA M, STARIKOVSKII A.Development of a cathode-directed streamer discharge in air at different pressure:Experiment and comparision with direct numerical simulation[J]. Physical Review E,2005,71(1),016407.
[18] WU Feifei, LIAO Ruijin, Wang Ke, et al. Numerical simulation of the characteristics of heavy particles in bar-plate DC positive corona discharge based on a hybrid model[J]. IEEE Transactions on Plasma Science,2014,42(3):868-878.
[19]梁曦东,陈昌渔,周远翔.高电压工程[M].北京:清华大学出版社,2003:19-22.
[20]张赟,曾嵘,黎小林,等.大气中短空气间隙流注放电过程数值仿真[J].中国电机工程学报,2008,28(28):6-12.
[21]张文静.大气压介质阻挡放电物理过程的数值模拟[D].上海:东华大学,2007.