Impact of a small disk on a sessile water drop
| Autor: | Alexander V. Bazilevsky, Aleksey N. Rozhkov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics Video recording Structure formation Mechanical Engineering Computational Mechanics Liquid drop Mechanics Condensed Matter Physics Breakup 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics Mechanics of Materials 0103 physical sciences Astrophysics::Earth and Planetary Astrophysics 010306 general physics |
| Zdroj: | Physics of Fluids. 32:087101 |
| ISSN: | 1089-7666 1070-6631 |
| DOI: | 10.1063/5.0018179 |
| Popis: | We address the details of events that follow the impact of a small solid disk on a water drop sitting on another disk of the same diameter. We experimentally demonstrate that fast squeezing of a low-viscosity liquid drop between two approaching disks leads to the formation of complex, radially expanding liquid structures (splashes) outside of the disks. The spatial and temporal dynamics of these splashes are tracked via high-speed video recording and flash photography. We analyze the mechanisms that control the shapes and breakup processes of these structures and derive a mathematical model for their behavior using simple physical arguments. Our investigation indicates that liquid structure formation is the result of a rapid increase in the velocity of liquid ejection from the gap between disks with time. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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