| 摘要 |
<p>An apparatus for controlling a boundary layer in a flow of an electrically conductive fluid moving relative to a surface in a free-stream direction comprises a plurality of selectively actuated control region tiles (406, 506) distributed over the surface (104) in an array extending in the free-stream direction and a direction transverse thereto. Each tile (406, 506) being bounded by magnetic field generating means (101, 102) for generating in the fluid a magnetic field having flux lines with a predetermined orientation with respect to the free-stream direction. A resulting vorticity distribution actuates the tiles (406, 506) to create control regions that introduce a vorticity distribution into the flow over each control region such that over the array the vorticity at the wall in the direction transverse to the free-stream is reduced and creation of boundary layer vorticity concentrations in the free-stream direction is inhibited.</p> |
