Vortex shedding decreases the lifetime of a cylinder exposed to a cross flow. Vortex shedding defficiencies may decrease when using rotating controllers near the cylinder. Vortex shedding suppression depends on the flow regime, geometrical and kinematic characteristics of the rotating controller. A numerical simulation based on the finite volume approach has been used to study the impact of the position of the twin rotating controllers on the rate of vortex shedding suppression at a particular laminar flow regime when the angular velocity of the control system is fixed. Obtained results illustrate that there is a most suppressible position for installing the rotating controller. The most suppressible controller position suppresses vortex shedding completely. It decreases the drag coefficient and vanishes the fluctuation of the torque coefficient.
