Method and apparatus for detecting laminar flow separation...

Details Method and apparatus for detecting laminar flow separation... Method and apparatus for detecting laminar flow separation...

G - Physics

01

F

354/30

G01F 1/00 (2006.01) G01F 1/68 (2006.01) G01M 9/06 (2006.01)

Patent

CA 1324832

METHOD AND APPARATUS FOR DETECTING LAMINAR FLOW SEPARATION AND REATTACHMENT Abstract of the Disclosure The invention is a method and apparatus for simultaneously detecting laminar separation and reattachment of a fluid stream such as an airstream from and to the upper surface of an airfoil 22 by simultaneously sensing and comparing a plurality of output signals S, each representing the dynamic shear stress at one of an equal number of sensors 27 spaced along a straight line on the surface of the airfoil 22 that extends parallel to the airstream. The output sigals S are simultaneously compared to detect the sensors across which a reversal in phase of said output signal S occurs, said detected sensors being in the region of laminar separation or reattachment.

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