DTIC ADA174544: Active Feedback Interaction with a pdf

DTIC ADA174544: Active Feedback Interaction with a_bookcover

DTIC ADA174544: Active Feedback Interaction with a

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Work continues on the characterization of the effects of a pitching airfoil on the shear layer structure and growth under open loop forcing. We have shown that locally introduced disturbances can induce significant changes in the growth of the shear layer mixing zone. A separate investigation into the structure of the wake of an oscillating airfoil in a steady, uniform free stream revealed the existence of an axial flow along the cores of the wake vortices. The magnitude of the axial flow appears to depend on both the frequency and amplitude of oscillation

  • Creator/s: Defense Technical Information Center
  • Date: 6/30/1986
  • Year: 1986
  • Book Topics/Themes: DTIC Archive, Dimotakis, P E, CALIFORNIA INST OF TECH PASADENA GRADUATE AERONAUTICAL LABS, *TURBULENT FLOW, *AIRFOILS, *WAKE, SHEAR PROPERTIES, FREQUENCY, CONTROL, PITCH(MOTION), CORES, INTERACTIONS, LAYERS, AIR FLOW, TURBULENCE, VORTICES, FLOW VISUALIZATION, FEEDBACK, MIXING, UNSTEADY FLOW, AMPLITUDE, OSCILLATION, FREE STREAM, OPEN LOOP SYSTEMS, AXIAL FLOW

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