MECHANISM OF A SINGLE DROPLET IMPACTING ON THE SPHERICAL SURFACE

摘要：

　　Droplet-spherical surface collision is a fundamental issue in the application of spray coating,trickle bed reaction,etc.In this paper,a single droplet impacting on a spherical surface at room temperature was investigated by analyzing the changes of droplet dimensions and coating efficiency taken with a high-speed camera.When contacting the spherical surface,the droplet spreads,retracts,relaxes or splashes on the surface.The effects of impact velocity (0.88~4.43m/s) and outer diameters of spherical surface (5~15mm) were analyzed.A relationship between critical K number and sphere diameter was established for theory analysis and numerical simulation.

关键词： single droplet spherical surface coating efficiency K number

作者: Q.Xu Z.Y.Li R.F.Wang S.G.Zhu J.S.Ye

作者单位: Tianjin University of Science and Technology P.O.B.563,Dagu Nan Road,Tianjin,China

会议类型: 国际会议

会议名称: The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))

会议地点: 厦门

会议语种:英文

页码: 1-4

在线出版日期: 2012-01-11（万方平台首次上网日期，不代表论文的发表时间）