Formation, evolution and decay of vortex street in the wake of a streamline body / A. I. Aleksyuk, V. P. Shkadova, V. Ya. nd Shkadov. //Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika. 2012. ? 3. P. 24-32 [Moscow Univ. Math. Bulletin. Vol. 67, N 3, 2012.].

The decay of Karman's vortex street and the generation of the secondary vortex structure in the far wake of a cylinder are studied. The dynamics of the spatially developing vortex structures is examined in the free flow and in the following ways of external influence on this flow: rotation with constant velocity and translational and rotational oscillations of the cylinder. The results are obtained by numerically solving the Navier-Stokes equations with two different methods. The corresponding boundary value problems are formulated in the domains extended up to 500 radii of the cylinder.

Key words: vortex wake, viscous fluid, Navier-Stokes equations, secondary vortex street.