Optimization of vortex shedding in 3-D wakes using belt actuators


P. Poncet, P. Koumoutsakos, International Journal of Offshore and Polar Engineering, 15(1), 7-13, 2005



This paper discusses the control of cylinder wakes via tangential wall velocity modifications. The wall velocity is piecewise constant (corresponding to belt actuators), and its amplitude is optimized using a clustering real coded genetic algorithm. This type of control significantly affects the vortical structures being shed in the wake, and it is shown that the flow gets significantly modified, resulting in a 3-dimensional body shedding 2-dimensional vortical structures in the near wake of the body. Depending on the energy involved in the control, one can also obtain a dramatic decrease of shedding amplitude.