The Experimenta Research And Numeri-cal Simulation Of Electro-hydrodynamic In Discharge Space

Experimental method and numerical simulation method is used in this paper to analyze the electro-hydrodynamic that formed in corona discharge. Putting up experimental platform and measuring data about corona discharge above it, on basic of it geometric model is built, in order to analysis the electro-hydrodynamic theoretically. Finally, the motion of charged mie particle in discharge space is analyzed when ion wind force and electric field force acted on it.First, volt-ampere characteristic and ion wind is measured above the experimental platform, the relation between the voltage put on corona electrode and the ion wind nearby the corona electrode is derived according to the experimental results.Secondly, on base of the experimental model, the simplified two dimensional geometric model is built. Fluent software --analysis platform of fluid flow is used to analysis the Electro-hydrodynamic in discharge space only one corona electrode discharged. The distribution of Electro-hydrodynamic under different voltage is similar, but the velocity of ion wind is different. We find that the experimental results and numerical simulation results is well coincidence, so the relation between the voltage put on corona electrode and the ion wind nearby the corona electrode is correct.Finally, FEMLAB software is used to calculate the distribution of electric field in discharge space, combined with the above results to analysis the mic-particles motion of different size when ion wind force and electric field force acted on it, the way of charged and saturated charged or not both influence the motion.By means of analysis about the electro-hydrodynamic in discharge space, we want to analysis the flow field in ESP, and proposed the improvement suggestions. It can provide theoretical basis and foundation of the design and optimizationfor ESP.