摘要
静电雾化技术可以提高喷射成形雾化质量,但由于雾化过程涉及气液固三相流、流场和电场等多场联合作用等,给试验研究带来了诸多不便.为了深入了解静电作用对喷射成形中金属液射流破碎的雾化过程影响,从理论上分析了静电作用对喷射成形雾化中射流破碎长度、雾滴表面张力和雾化液滴粒径的影响.结果表明:随着静电电压的增加,射流破碎长度将缩小,雾化液滴直径减小;当电压升高到一定值时,破碎长度和雾滴直径趋于稳定.静电力降低了液滴的表面张力,使得雾化动力相对增加,从而有助于提高雾化质量.
The electrostatic atomization technology can improve the atomization quality in spray forming, but many inconveniences will be brought into the experimental study because the atomization process involves the combined effect of various fields such as gas-liquid-solid three phase flow, flow field and electric field. In order to deeply understand the effect of electrostatic interaction on the atomization process for the fragmentation of metal liquid jet in the spray forming, the influence of electrostatic interaction on the fragmentation length of jet as well as both surface tension and diameter of atomized droplets was fragmentation length of jet will reduce and the diameter of atomized droplets will decrease. When the voltage rises to a certain value, the fragmentation length of jet broken and diameter of atomized droplets will tend to be stable. The electrostatic force reduces the surface tension of droplets, and makes the atomization power relatively increase, which will be helpful for improving the atomization quality.
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2013年第5期510-514,共5页
Journal of Shenyang University of Technology
基金
霍英东第十二届基础性研究课题资助项目(121054)
沈阳市工业科技攻关项目(F11-033-2-00)
关键词
静电雾化
喷射成形
雾化质量
破碎长度
表面张力
液滴粒径
充电电压
雾化动力
electrostatic atomization
spray forming
atomization quality
fragmentation length
surface tension
diameter of droplet
charging voltage
atomization power
