Аннотация:Optical measurements of a drop impact flow analysed basing on the on fundamentalequations system. Several types of flow structures that are intrusive, as well as cavityformation regimes, identified. The important role of energy transport processes, both fast –local atomic-molecular and conventional slow that are translational and dissipative, in theformation of flow patterns is marked. Conversion of available surface potential energy as aphysical factor and critical condition definition of the flow changes are defined. Ligamentsi.e. the finest jets (trickles) with transverse sizes from atomic-molecular clusters tomacroscopic scales are identified in flow patterns. Ligaments are manifested themselves asfine ejecta and spikes with splashes in patterns of the fluid contact, thin filaments on thesurface of the cavity with accompanied crown, and fine fibre loops inside the fluid volume.
