Advection of Particles of Liquid in the Field of Speed of Flat Vortexes in Their Confluence

The paper studies the behavior of a passive addition in the field of speed of three blowing-up point vortexes and also in interaction of three distributed vortex spots of a similar vorticity in two-dimensional incompressible endless medium are. The vortex spots are considered in the frame of a moment model of the second order where they are described by the elliptic Kirchhoff vortexes.