The critical Weber number for vortex and jet formation for drops impinging on a liquid pool
- 1 December 1988
- journal article
- conference paper
- Published by AIP Publishing in Physics of Fluids
- Vol. 31 (12) , 3560-3562
- https://doi.org/10.1063/1.866872
Abstract
When a liquid drop impacts on a pool, the drop will either coalesce into the host liquid, with the creation of a vortex ring below the surface and little splashing above, or will splash, producing a cavity in the host liquid that collapses inward, producing an upward jet of fluid. It is found that there is a critical Weber number, Wec=U(ρD/T)1/2≂8, below which vortex rings are formed and above which a jet is produced for drops falling into the identical fluid. Here, U is the drop speed at impact, D is the drop diameter, and ρ and T are density and surface tension, respectively. The Weber number criterion is compared with experiments using water and mercury.Keywords
This publication has 13 references indexed in Scilit:
- The penetration of drop-formed vortex rings into pools of liquidJournal of Colloid and Interface Science, 1988
- Bubble entrainment with dropsJournal of Colloid and Interface Science, 1986
- Some drops don't splashJournal of Colloid and Interface Science, 1985
- Droplet Impacts Upon Liquid SurfacesScience, 1984
- Movement of solids in air and water by raindrop impact. effects of drop-size and water-depth variationsSoil Research, 1983
- Splashing liquid drops form vortex rings and not jets at low Froude numbersJournal of Applied Physics, 1981
- The mixing of rain with near-surface waterJournal of Fluid Mechanics, 1979
- Influence of Rainfall on Temperature and Salinity of the Ocean SurfaceJournal of Applied Meteorology, 1969
- Formation of vortex rings from falling dropsJournal of Fluid Mechanics, 1967
- V. On the formation of vortex rings by drops falling into liquids, and some allied phenomenaProceedings of the Royal Society of London, 1886