drop coalescence, electrical methods, flow geometries, high speed imaging, inertial effect, length scale, liquid drop, liquid viscosity, drops, liquids, coalescence
Using an electrical method and high-speed imaging, we probe drop coalescence down to 10 ns after the drops touch. By varying the liquid viscosity over two decades, we conclude that, at a sufficiently low approach velocity where deformation is not present, the drops coalesce with an unexpectedly late crossover time between a regime dominated by viscous and one dominated by inertial effects. We argue that the late crossover, not accounted for in the theory, can be explained by an appropriate choice of length scales present in the flow geometry.
Viscous to inertial crossover in liquid drop coalescence. JD Paulsen, JC Burton, & SR Nagel, Physical Review Letters 106, 114501 (2011).
Paulsen, Joseph, "Viscous to inertial crossover in liquid drop coalescence" (2011). Physics. 520.
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.