THE DISTRIBUTION OF THE HYDRODYNAMIC FORCES ON A HEAVING AND PITCHING SHIPMODEL, WITH ZERO FORWARD SPEED IN STILL WATER

Abstract

As an extension of earlier work on the distribution of the hydrodynamic forces, acting on a heaving and pitching shipmodel, this report deals with the case of zero forward speed. Forced oscillation tests were carried out with a segmented shipmodel to investigate the distribution of the forces along the hull for heaving and pitching motions. The in-phase and quadrature components of the vertical forces on each of the seven sections were measured as a function of frequency and an analysis was made of their distribution along the length of the shipmodel. The experimental results are compared with Grim's values for damping and added mass. The comparison shows a satisfactory agreement between theory and experiment.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1965
Accession Number
AD0615481

Entities

People

  • Ir J. Gerritsma
  • W. Beukelman

Organizations

  • Delft University of Technology

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Coefficients
  • Contracts
  • Coordinate Systems
  • Couplings
  • Equations
  • Equations Of Motion
  • Frequency
  • Hard Copy
  • Inertia
  • Military Research
  • Moment Of Inertia
  • Oscillation
  • Resonant Frequency
  • Segmented
  • Shipbuilding
  • Waves

Fields of Study

  • Engineering

Readers

  • Marine Hydrodynamics