Patent ID: 7431244

Claim:
A device for the generation or destruction of eddies in a flow medium, comprising: a profile having a leading and a trailing edge and arranged in a flow duct having an axis of flow direction such that the flow medium flows around the profile; and an external drive in mechanical communication with the profile and adapted to provide the profile with periodic translational movement back and forth along an axis perpendicular to the flow direction axis; wherein the movement by the external drive upon the profile is effective to form finite edge vortices along the trailing edge during passage of flow medium in the flow ducts, wherein the external drive is adapted to additionally communicate a pivoting movement of the profile that results from a rotation of the profile about an axis of rotation that is perpendicular to the flow direction of the flow medium through an angle φ, and wherein the flow duct has two profiles arranged within that oscillate with the same angular frequency ω and in countersynchronism about their respective axes of rotation and the axes of rotation are oriented parallel to each other.