Numerical analysis of the influence of rotary rear cylinders on a nonstationary wake behind an elongated body

The influence of rotary rear cylinders on a nonstationary wake behind a rounded-off plate is analyzed numerically based on the solution of nonstationary Navier-Stokes equations on multiblock computational grids by the finite-volume method. It is shown that the von Kármán vortex trail, which develops behind the body to the point of formation of a virtually steady jet flow, substantially weakens as the rotational velocity of the cylinders increases.[PUBLICATION ABSTRACT]