Investigation of the Flow Characteristics of Droplets in Non-uniform Electric field

摘要

The motion behavior of droplets under non-uniform electric field is an important branch the study of electro-hydrodynamic. In this paper, the theoretical analysis of the force of droplets in non-uniform electric field are carried out, and the study found that the deformation, surface charge density, velocity and other flow characteristics of droplets will change in the effect of non-uniform electric field. In order to study those flow characteristics and the influence of electric field intensity on the deformation and displacement degree of droplets, we will establish the simulation model of droplets and the non-uniform electric field. The results show that the polarization charge distribution on the surface of droplets is not uniform, and the charge density at the center of the electric field is increased gradually; the increase of the electric field intensity in a certain range can increase the droplet shape variable and the moving velocity of the droplet to the concentrated area of the electric field.