Title: Transport of drop substance in a quiescent, rotating or wavy fluid

Abstract

Drops are involved in processes of various scales – from a local to a global one of climatic scales. High-resolution video recording used to register the drop material transfer in a target fluid at rest, in a compound vortex above rotating disk installed at the bottom of a container, and in the field of running capillary waves. In the quiescent medium, the inflowing drop firstly forms a colored volume in the intrusive mode. A cavity is formed in the center of flow with a delay and push out the colored vortex ring. At high velocities, the spreading drop forms a linear and reticular pattern on the cavity surface. In flow evolution the fibrous structure is repeatedly rearranged [1]. In a rotating fluid, the substance of the drop enters the liquid thickness along the helical lines and forms spiral tongues on the vortex surface. In the field of plane surface waves a drop first spreads as in a medium at rest with the formation of a cavity and a crown covered with colored fibers. Further, the submerging vortex ring and the near-surface vortex dipole are separated from the spot [2]. In all flow components, the dye remains in the form of fine fibers. The formulation and analysis of experiments are carried out in frame of fundamental equations system, taking into account all the mechanisms of the energy transfer [3].