Flow-Structure Interactions in Presence of a Free-Surface

Abstract

Determine the space-time structure of vortex formation from bodies adjacent to a free-surface using quantitative imaging; relate this structure to the instantaneous loading. Employ both externally-controlled and elastically-mounted systems to assess the mechanisms of energy transfer between the fluid and the body, with the eventual intent of implementing active and passive control. Determine experimentally the relationship between: (1) mechanisms of vortex formation from a cylinder in presence of a free-surface; and (2) unsteady loading on the cylinder. Develop and implement new techniques for acquisition of instantaneous, quantitative images of vortex patterns that dictate unsteady loading.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
ADA572513

Entities

People

  • Donald Rockwell

Organizations

  • Lehigh University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acquisition
  • Amplitude
  • Delta Wings
  • Energy Transfer
  • Engineering
  • Flow
  • Fluid Mechanics
  • Frequency
  • Frequency Modulation
  • Measurement
  • Mechanical Engineering
  • Mechanics
  • Oscillation
  • Particle Image Velocimetry
  • Particle Trajectories
  • Surface Waves
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Structural Dynamics.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster