Complexities of splashing
نویسندگان
چکیده
We study the impact of a drop of liquid onto a thin layer of the same liquid. We give an overview of the sequence of events that occur as the two most important dimensionless control parameters are varied. In particular, multiple cohorts of droplets can be ejected at different stages after impact due to different mechanisms. Edgerton’s famous Milkdrop Coronet is only observed for a narrow range of parameters. Outside this range, the splash is either qualitatively different, or suffers from a much lower level of regularity. PACS numbers: 47.20.−k, 47.20.Ma, 47.55.D− (Some figures in this article are in colour only in the electronic version)
منابع مشابه
Modeling of splat particle splashing data during thermal spraying with the Burr distribution
Splashing of splat particles is one of the most important phenomena in industrial processes such as thermal spray coating. The data relative to the degree of splashing of splats sprayed with a normal angle are commonly characterized by the Weibull distribution function. In this present study, an effort has been made to show that the Burr distribution is better than the Weibull distribution for ...
متن کاملSplashing Phenomena during Liquid Droplet Impact
Splashing is a phenomenon often observed during liquid droplet impact onto a solid surface. The threshold of splashing is known to be related to droplet size, impact velocity, and physical properties of the liquid, but the mechanisms that initiate splashing are not understood completely. In accordance with the Kelvin-Helmholtz (K-H) instability analysis, recent studies have shown that ambient g...
متن کاملDroplet Lamella Lift Dynamics and Surface Wettability
Droplet impact on dry, smooth surfaces remains an issue for a variety of important applications such as fuel injection, spray cooling, metallurgy, pesticides and coatings. The mechanisms that initiate splashing are highly complex and differ from those on rough or pre-wetted surfaces. In this work, droplet wettability on a smooth, dry surface is examined to quantitatively evaluate its influence ...
متن کاملAnalysis of splashing in Basic Oxygen Furnace through systematic modelling
The Basic Oxygen Furnace (BOF) is studied in this paper. BOF is a sub process in a blast furnace based steel making process, in which most of carbon is burned away from the pig iron. The carbon is burned away by using pure oxygen, which is blown through a lance into the mixture of pig iron and recycled steel. Previously the splashing in BOF has been mainly qualitatively analysed (Ruuska 2012). ...
متن کاملFrom splashing to bouncing: The influence of viscosity on the impact of suspension droplets on a solid surface.
We experimentally investigated the splashing of dense suspension droplets impacting a solid surface, extending prior work to the regime where the viscosity of the suspending liquid becomes a significant parameter. The overall behavior can be described by a combination of two trends. The first one is that the splashing becomes favored when the kinetic energy of individual particles at the surfac...
متن کامل