The Response of Cable-Moored Axisymmetric Buoys to Ocean Wave Excitation

Abstract

Forces and motions imposed upon a moored buoy system by the oceanic environment are investigated using numerical methods on a digital computer. Equations of motion for axisymmetric buoys are developed for six degrees of freedom including cross-coupled hydrostatic and hydrodynamic forces. Equations of motion for the mooring cable are developed to allow simultaneous axial and transverse wave propagation. A unique method of characteristics numerical technique is shown for digital computer simulation of cable dynamics. The equations of motion for the buoy and its mooring cable are coupled and are excited by winds, currents, and a quasi-random wind wave model. Simulated buoy system parameter response characteristics are compared with response characteristics observed from actual oceanographic buoy system moorings.

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Document Details

Document Type
Technical Report
Publication Date
Jun 15, 1972
Accession Number
AD0745749

Entities

People

  • Kirk T. Patton

Organizations

  • Naval Underwater Systems Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Birds
  • Block Island
  • Computational Science
  • Computer Programs
  • Computer Simulations
  • Computers
  • Differential Equations
  • Elastic Properties
  • Equations Of Motion
  • Measurement
  • Mechanics
  • Modulus Of Elasticity
  • Ocean Waves
  • Oceanography
  • Partial Differential Equations
  • Steady State
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Fluid Dynamics.
  • Oceanography.