Study On The Mechanism Of Droplet Deformation In High Voltage Electric Field

Wind energy has the characteristics of abundant resources,renewable and pollution-free,and is recognized as one of the ideal alternative energy sources.As a new type of power generation technology,bladeless electrostatic wind power generation can be operated under low wind speed and has no moving parts,simple structure and convenient maintenance.In this paper,the change rule of droplet shape under multi-field coupling effect is studied through theory,simulation and experiment.In this paper,the working principle and atomization mechanism of the bladeless electrostatic wind power generation system are described,and the factors affecting droplet shape change in the electrostatic field are put forward.Droplets form under a single injection needle visualization experiment platform,using a digital camera and matlab image processing for the droplet morphological change in the electrostatic field characteristics and loss of time,the influence of each factor is analyzed in the droplets form,droplet under each factor obtained form the trend of change and the distribution of the droplet surface charge;The results show that the voltage is the first factor that affects the droplet shape change and the length of drop shedding,followed by the relative distance between the electrode and the injection needlet,and finally he electrode geometry.The visual experimental platform of droplet morphology under multi-injection needle was established,and the influence of the distance between injection needles on droplet morphology was explored.The experimental study on the injection current under the influence of droplet shape factors was carried out.The conclusion of this paper can provide some theoretical and data reference for the mechanism of electrostatic atomization and the optimal design of the vane less electrostatic wind power generation system.