Аннотация:An analysis of the complete solutions of the linearized system of fundamental equations for weakly dissipating media was performed by methods of singular perturbations. Regular functions of complete solutions describe waves of different types. Singularly perturbed solutions describe a wide class of ligaments–previously unknown high gradient components of flows supplementing well investigated propagating waves. All flow components that are internal waves, vortices and ligaments were observed in a stratified wake past a vertical plate. Ligaments are classified as linear precursors of shock waves.
As the system of fundamental equations is invariant with respect temporal and spatial scales the basic flows components that are waves, vortices and ligaments are universal and exist in the whole range of the fluid flows from microscopic to macroscopic length scales.
