Resumen de Vorticity, Free Surface, and Surfactants
The central intent of this paper is to describe a number of analyses and experi- ments that could eventually serve to elucidate the physics of fluid mechanics phe- nomena such as the generation of whirls, the quasi-two-dimensionalization of tur- bulence near the free surface, and the reverse energy cascade at pure and contam- inated interfaces. Discussed in some detail are the vorticity flux; surface-tension effects; basic equations and boundary conditions; the role of surfactants; topol- ogy of interfacial interactions; characteristics of connections, disconnections, and reconnections; a number of canonical flows (single and paired vortices, jets, and vortex rings); and the need for the development of prediction methods for turbulent flows in a region bounded by a free-surface, solid-fluid juncture boundary layer and the nonlinear interactions of shear flow wake turbulence with a free surface.
