Stabilization of the wake behind a circular cylinder that performs high-frequency angular oscillations

摘要

The effect of stabilization of the track behind the cylinder under high frequency oscillations has been investigated. A new gridless numerical method of viscous vortex domains (VVD) is used. The absence of published data on the numerical simulation of experiment can be associated with difficulties in calculation of the flows requiring high resolution of the spatial and time structure of the boundary layer. The Reynolds number calculated by the motion velocity of the cylinder axis and its diameter Re = 111. The fluid flow perturbed by the cylinder is described by unsteady two dimensional Navier-Stokes equations, the boundary conditions on the cylinder surface are the adherence conditions by essence, and the conditions of degeneracy of perturbations are stated for infinity. A new numerical method of viscous vortex domains applied has provided the effect of stabilization of the wake behind the circular cylinder performing high-frequency rotational oscillations.