Abstract：To discuss the transition mechanism of electrostatic atomization mode, a visualization research on the characteristics of electrostatic spray of nano-fluid was conducted by microscopic high-speed camera technology. Using nano-fluids with different mass concentrations as experiment medium, the microscopic morphology of eletrosprays was captured to discuss the effects of surface tension, flow rate and conductivity on the evolution of electrostatic atomization of nano-fluid. The experimental results show that with the increasing of mass concentration of nano-fluid, the atomization range of cone-jet mode gradually becomes narrow, and the critical electric field intensity gradually increases for atomization range transition to cone-jet mode. The increasing of conductivity make nano-fluids more likely transform to multi-jet mode. The increasing of flow rate causes the instability of atomization, and the higher electric field intensity should be required to achieve the same atomization effect.
2018, Vol. 39 
