Design And Optimization Of High Efficiency Charged Particle Generator

The water molecules are polar molecules.In the process of aerosol growth,the aerosol molecules will be charged with charged particles.When the temperature and humidity are required,the water molecules in the air will collide with the aerosol particles under the action of the electric field,and finally form a certain scale of water droplets and fall down to form the rainfall.Based on this principle,charged particle catalytic snowfall technology has attracted more and more attention as a new technology of artificial snow and snow in recent years.The corona discharge makes use of high field strength near the electrode with smaller curvature radius to make the air ionization to produce charged particles.The use of corona discharge to produce a stable particle source is a relatively reliable and effective means of obtaining charged particles.Under the background of "Tianshui project",the principle of positive and negative corona discharge is introduced in detail and a simulation model based on the fluid chemical reaction model of DC corona discharge in air tube structure at normal temperature and atmospheric pressure is given.The common corona discharge structure is analyzed in detail,and many kinds of structures are analyzed and simulated by the principle.I analyze the basic structure,the wire electrode structure is selected as the charged particle generating device.Based on the peek empirical formula and the Kaptsov theory,the simplified model is introduced.Through the joint simulation of the partial differential equation of the electrostatic field and the current continuity,the problem that the corona discharge of the wire electrode structure is difficult to be solved in a large size background has been solved for a long time.The simulation method is used to analyze the influence of the line diameter,the distance of the isopolar line,the distance of the isopolar line,the discharge voltage,the number of electrode line and the temperature on the discharge parameters,and the optimization method of the wire electrode structure is put forward,and the concrete optimization scheme is given.Finally,through the artificial rainfall experiment in the large artificial climate room of the Key Laboratory of disaster prevention and disaster reduction in Changsha County national power grid,Changsha,Hunan Province,the feasibility and efficiency of the charged particle generator designed by this method have been successfully verified.