【摘要】 液体荷电雾化技术能够有效降低雾化的粘滞阻力,提高雾化效果,在雾滴形成后电场能减小雾滴表面张力,使雾滴产生二次雾化,进一步减小雾滴粒径,同时可以提高雾滴粒径尺度的均匀性。以空气、水为介质对自行设计的双流体雾化喷嘴进行了实验研究,获得了不同荷电电压与液气比下的雾滴粒径、雾滴轴向射流速度及雾滴的轴向湍流脉动强度,利用相关技术实现了对气液两相速度和湍流脉动强度的测定,探讨了荷电电压对雾滴粒径、轴向射流速度及湍流脉动强度的影响。更多还原

【Abstract】 The electrostatic charged spray could reduce the viscosity resistance and enhance the atomization effect. After the droplets come into being, the electric field can minish the droplets surface tension and make the droplets produce the second atomization, and further the droplets become much smaller and the uniformity of droplets diameter is improved. With the air and water as working fluids, the experimental research of twin-fluid charged spray nozzle designed by oneself was studied. The droplets diameter, the axial jet velocity and turbulent fluctuation intensity under the different charged voltages and gas-liquid ratio were obtained. The measure of two phases flow velocity and turbulent fluctuation intensity were determined. The influence of charged voltage and droplets diameter, axial jet velocity, turbulent fluctuation intensity were discussed.更多还原