荷电液滴撞击织物表面铺展特性的试验  

Experiment on spreading characteristics of charged droplets impacting on fabric surface

作　　者：王军锋[1] 吴琦[1] 霍元平[1] 许荣斌[1] 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2016年第4期394-398,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51006047);教育部博士点基金资助项目(20123227110002)

摘　　要：基于显微高速摄像技术对荷电液滴撞击多孔织物后的铺展行为进行了可视化研究,并结合图像后处理技术获得了液滴撞击多孔织物表面后液滴表面张力、荷电电压以及初始速度等参数对液滴在织物表面的铺展因子随时间变化的影响规律.结果表明:液滴撞击织物表面后的最大铺展因子和铺展速率都随着液滴撞击初始速度或者表面活性剂质量分数的增大而增大;随着荷电电压的增大,液滴最大铺展因子总体呈增大趋势;撞击初始速度增大后,液滴在织物表面的最大铺展因子会在液滴荷电电压为4 kV时达到最大值,并且当速度增大到一定值时,荷电液滴会产生破碎.Based on visual microscopic high-speed camera technology,the spreading behavior of charged droplets impacting on porous fabric was investigated. Based on the binding and image processing,the influence law of spreading factor changing with time after droplet impacting on the porous fabric surface was obtained with considering droplet surface tension, charged voltage, initial velocity and other parameters. The results show that the maximum spreading factor and the spreading velocity of droplets are increased with the increasing of droplet initial velocity and surfactant concentration. As the droplet voltage increases,the spreading factor tends to increase. With the increasing of initial velocity,the spreading factor is increased and reaches the maximum value at the charged voltage of 4 k V. The charged droplets are broken when the velocity reaches high value.

关 键 词：荷电液滴 初始速度 多孔织物 铺展特性 表面活性剂 

分 类 号：TB126[理学—工程力学]