An Examination of Wake Oscillator Models for Vortex-Induced Vibrations

Abstract

Experimental results for vortex-induced vibrations of both pivoted and non-pivoted cylinders in a crossflow are presented in this report. Simplified models involving two ordinary differential equations are reviewed and shown to exhibit many of the features of the experimental results. Results of perturbation analysis of the simplified model are presented and used to explain some qualitative features, such as resonant frequency locking and hysteresis, in terms of bifurcations in the slow flow.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADA396789

Entities

People

  • Leslie Ng
  • Richard H. Rand
  • Timothy Wei
  • William L. Keith

Organizations

  • Naval Undersea Warfare Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Flow
  • Differential Equations
  • Equations
  • Experimental Data
  • Flow
  • Fluid Flow
  • Frequency
  • Frequency Response
  • Hysteresis
  • Leaf Springs
  • Oscillation
  • Perturbations
  • Resonance
  • Resonant Frequency
  • Undersea Warfare
  • Vibration
  • Vortex Shedding

Readers

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