THE FRANK CLOSE-FIT SHIP-MOTION COMPUTER PROGRAM.

Abstract

The report is a manual for 'The Frank Close-Fit Ship-Motion Computer Program.' The input and output schemes and the theory are explained in detail. The program computes pitch and heave motions for ships in regular and irregular head waves. The regular wave responses are computed according to an improved version of the Korvin-Kroukovsky strip theory. The irregular seaway is represented by the Pierson-Moskowitz Sea Spectrum and statistical response parameters are computed for pitch and heave as well as for absolute and relative vertical displacment, velocity and acceleration at any point along the length of the ship. A comparison between theory and experiment of the pitch and heave amplitudes and phases for five hull forms is presented and the agreement is satisfactory for both common cruiser-stern ships and high-speed destroyers and also for hulls with large bulbs and sonar arrays. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1970
Accession Number
AD0709072

Entities

People

  • Nils Salvesen
  • Werner Frank

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Agreements
  • Amplitude
  • Arrays
  • Computer Programs
  • Computers
  • Destroyers
  • Hulls (Marine)
  • Motion
  • Ship Motion
  • Ships
  • Sonar Arrays
  • Spectra

Readers

  • Computer Science.
  • Marine Hydrodynamics