Complete Coalescence, Partial Bounce and Rebound: Different Regimes Resulting from the Interaction of a Free Falling Drop with a Target Fluid

作     者：Yuli D.Chashechkin Andrey Y.Ilinykh 

作者机构：Ishlinsky Institute for Problems in Mechanics of the Russian Academy of SciencesMoscow119526Russia 

出 版 物：《Fluid Dynamics & Materials Processing》 (流体力学与材料加工（英文）)

年 卷 期：2020年第16卷第4期

页      面：801-811页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the Russian Science Foundation(Project 19-19-00598“Hydrodynamics and energetics of drops and droplet jets:formation motion break-up interaction with the contact surface”) 

主　　题：Drop coalescence bounce spray transport of matter miscible fluids 

摘      要：The interaction of a falling drop(diluted aqueous solution of ink in various concentrations)with a target fluid(partially degassed tap water)has been tracked by means of high-resolution video recording and *** experimental setup has carefully been prepared in order to preserve the axial symmetry of initial *** regimes of interaction have been identified accordingly(depending on the drop velocity as controlled by the distance of fall):rapid droplet coalescence,rebound with the conservation of the drop volume and shape,and partial *** findings are recovered and confirmed,and enriched with heretofore unseen observations of complex partial *** extensive set of data is reported to support understanding of the observed dynamics and their repeatability and *** overall study has been carried out with the express intent to spur the future development of detailed mathematical models and numerical methods suited for this kind of problems.