Patent Number: 6,332,593

Title: Method and apparatus for reducing turbulent drag

Abstract: The systems and methods of the invention include systems and techniques for controlling a turbulent boundary layer flow with a transverse traveling wave, oscillating at certain selected frequencies, amplitudes and wavelengths, to provide substantial reductions of drag. To this end, the systems and processes can include a boundary layer control system having an object with at least one surface exposed to a medium flowing over the surface. A plurality of excitation elements may be arranged on the surface and these elements are capable of exciting a traveling wave force field in a span-wise direction that is substantially parallel to the surface and perpendicular to direction of the flow. A first component of the traveling wave force field in the span-wise direction is substantially greater than a second component of the traveling wave force field, that is substantially perpendicular to the span-wise direction.

Inventors: Kamiadakis; George Em (Newton, MA), Du; Yiging (Bellevue, MA)

Assignee: Brown University Research Foundation

International Classification: B64C 23/00 (20060101); B64C 021/00 ()

Expiration Date: 12/25/2018