Fragmentation instability of a liquid drop falling inside a heavier miscible fluid.
We report a different type of drop instability, where the density difference between the drop and the solvent is negative. We show that the drop falls inside the solvent down to a minimum height, then fragmentation takes place and secondary droplets rise up to the surface. We have developed a theoretical model that captures the essentials of the phenomenon and predicts the correct scalings for the rise-up time and the minimum height.
Physics Department of the University of Cape Coast, Cape Coast, Ghana.
Paul K
PK
Buah-Bassuah
René
R
Rojas
Stefania
S
Residori
F T
FT
Arecchi