Feedback Control of Karman Vortex Shedding

Abstract

A direct numerical simulation of the Navier-Stokes equations of a feedback controlled cylinder wake flow at the Reynolds number of 60 is presented. The simulation shows that vortex shedding behind a circular cylinder is suppressed to a significant degree by applying a feedback forcing with an appropriate phase via blowing/suction slots located at +/-110 deg from the leading edge. Depending on the phase of the feedback forcing relative to the vortex shedding phase, the shedding of the vortices is either suppressed (stabilized) or further enhanced (destabilized). Active control, Torpedo.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1992
Accession Number
ADA262814

Entities

People

  • D. M. Ladd
  • D. S. Park
  • E. W. Hendricks

Organizations

  • Naval Command, Control and Ocean Surveillance Center

Tags

Communities of Interest

  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Velocity
  • Actuators
  • Boundaries
  • Boundary Layer
  • Coefficients
  • Detectors
  • Equations
  • Flow
  • Frequency
  • Leading Edges
  • Navier Stokes Equations
  • Reynolds Number
  • Simulations
  • Turbulent Mixing
  • Two Dimensional
  • Viscous Flow
  • Vortex Shedding

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Fluid Mechanics and Fluid Dynamics.