How viscous bubbles collapse: Topological and symmetry-breaking instabilities in curvature-driven hydrodynamics.

ABSTRACT: The duality between deformations of elastic bodies and noninertial flows in viscous liquids has been a guiding principle in decades of research. However, this duality is broken when a spheroidal or other doubly curved liquid film is suddenly forced out of mechanical equilibrium, as occurs, e.g., when the pressure inside a liquid bubble drops rapidly due to rupture or controlled evacuation. In such cases, the film may evolve through a noninertial yet geometrically nonlinear surface dynamics, which has remained largely unexplored. We reveal the driver of such dynamics as temporal variations in the curvature of the evolving surface. Focusing on the prototypical example of a floating bubble that undergoes rapid depressurization, we show that the bubble surface evolves via a topological instabi

SUBMITTER: Davidovitch B 

PROVIDER: S-EPMC11317635 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature