Control of Two- and Three-Dimensional Wake Instabilities from Bluff-Bodies

Abstract

The long-range goals of this investigation are to: (1) Determine the effects of various active and passive control techniques on the instantaneous and time-averaged structure of the three-dimensional wake of a cylinder at low and high Reynolds number; (2) Characterize the unsteady loading on the cylinder, including the phase shifts between the cylinder motion, the forces acting on the cylinder, and the three-dimensional structure of the near-wake; and (3) Develop new types of experimental techniques, focusing on high-image-density particle image velocimetry (PIV), image processing and pattern recognition, and methods of instantaneous force measurement.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1992
Accession Number
ADA260410

Entities

People

  • Donald Rockwell

Organizations

  • Lehigh University

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Boundary Layer
  • Engineering
  • Flow
  • Flow Visualization
  • Fluid Mechanics
  • Frequency
  • Image Processing
  • Mechanical Engineering
  • Mechanics
  • Minority Groups
  • Particle Image Velocimetry
  • Pattern Recognition
  • Physics
  • Reynolds Number
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Neural Network Machine Learning.

Technology Areas

  • AI & ML