电晕放电电流体状态实验研究与数值模拟  

Experimental Research and Numerical Simulation of Electro-hydrodynamic in Corona Discharge

作　　者：李庆[1] 李海凤[1] 孙晓荣[1] 张文月[1] 王昊[1] 

机构地区：[1]河北大学静电研究所,保定071002

出　　处：《高电压技术》2010年第11期2739-2744,共6页High Voltage Engineering

基　　金：国家自然科学基金(5107703510875036);河北省自然科学基金(A2010000182);河北省"十一五"科技支撑计划(09276712D)~~

摘　　要：为了分析电晕放电过程中电流体的形成过程及放电空间的流体分布状态,采用实验分析和数值模拟相结合的方法进行了实验研究。先在分析线板电晕放电伏安特性及极板处离子风分布变化的基础上确立了离子风速v与放电电压U之间的关系为v=(0.126-0.0217U+9.418×10-4U2)×23.3,然后建立线板放电二维模型并在流场分析平台Fluent软件上利用动力风代替离子风的方法,根据放电电压与离子风速之间的关系,模拟不同电压下放电通道内的电流体的状态。模拟显示的不同电压下离子风在极板处的衰减结果与相同条件下该处的实验值具有很好的符合度,从而证明简化的数值模拟方法及确立的电压和离子风速关系的正确性。采取的实验方法及数值模拟方法不仅简化了复杂的电流体流场问题,其结论也为除尘器的设计提供了必要的理论支持。In order to analyze the formulation of electro-hydrodynamic in corona discharge space and the distribution of electro-hydrodynamic in discharge space,experimental method and numerical simulation method were used.First,based on the results of volt-ampere characteristic and ion wind velocity nearby plate in discharge process,the relation between ion wind velocity and voltage was obtained as v=（0.126-0.0217U＋9.418×10^-4U^2）×23.3.Then,a two-dimensional discharge channel model was established,and the electro-hydrodynamic in discharge channel was simulated using Fluent software（flow field analysis platform）,in the process of simulating,the ion wind is replaced by the dynamic wind.According to the relation between ion wind velocity and voltage,there is great goodness of fit between attenuation value of ion wind near plate and the experimental result at the same condition under different voltage.So the simplified numerical simulation method and the relation between ion wind velocity and voltage is correct.The experimental method and numerical simulation method not only simplify the complex electro-hydrodynamic problem in discharge space,but also provide a necessary theoretical support for the design of ESP（electrostatic precipitator）.

关 键 词：电晕放电 电流体 数值模拟 场强分布 离子风 动力风 

分 类 号：X701.2[环境科学与工程—环境工程]