文献类型：会议

作　　者：魏瑀 陶益壮

作者单位：西安交通大学航天航空学院国际应用力学中心

会议文献：第十一届全国流体力学学术会议论文摘要集

会议名称：第十一届全国流体力学学术会议

会议日期：20201203

会议地点：中国广东深圳

出版日期：20201200

学会名称：中国力学学会

语　　种：中文

摘　　要：Drop impact is a ubiquitous phenomenon in nature and many engineering applications,from marine science,soil and water conservation to combustion and ink-jet printing.The application of hollow powder in the deposition process of thermal barrier coatings can generate a thicker and more uniform layer.The hollow particles are molten before impacting on the target surface,corresponding to a drop containing a bubble.Previous studies observed that such air-in-liquid compound drops can generate a vertical jet during impact,and that the maximum spreading of the drop is reduced due to the presence of the bubble.In this research,we systemically studied the effect of bubble size,liquid properties and impact velocity on the spreading dynamics of a drop containing a bubble impacting on a solid surface.Finally,we propose a model for the maximum spreading of the impacting air-in-liquid compound drop,adapted from previous theories for pure liquid drop impact.

关 键 词：Drop impact  Air-in-liquid compound drop  Maximal spreading  

分 类 号：O353.4]