 A large amount of studies and researches has been conducted concerning these interactions and their dependencies, aiming the understanding of the aerodynamic phenomena that arise due to them, such as the Kármán vortex street, galloping, buffeting and flutter, mainly regarding bluff bodies.By the understanding of such phenomena it is possible to predict instabilities and their consequent motions, feeding the designers with the data they need in order to arrange the structures properly.In the great majority of the cases – e.g.