The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1999
Filed:
Nov. 19, 1996
Daniel M Nosenchuck, Mercerville, NJ (US);
The Trustees of Princeton Univ., Princeton, NJ (US);
Abstract
The boundary layer of a fluid travelling in a mean-flow direction relative to a surface of a wall of a body is controlled by generating in the fluid a magnetic field B having flux lines along the surface of the wall and an electric current density J traversing the magnetic flux lines in the fluid to form a control region. The magnetic field B and the electric current density J create in the control region a force J.times.B that introduces a vorticity distribution .omega. (x,y,z,t) into the flow. A plurality of such control regions is arranged in an two-dimensional array of control tiles that are actuated such that over the array the vorticity at the wall in the direction transverse to the free-stream direction is reduced and creation of the boundary layer vorticity concentrations in the free-stream direction is inhibited.