Calculation of Wave Elevations in Ship Wakes by Using the Swim Free-Surface (SWIMFS) Code.

Abstract

SWIMFS, a linearized free-surface potential flow program, has been developed and used to compute and analyze the near- and far-field wave elevations in the wakes of ships moving in calm water. Wake contours and three-dimensional perspective plots are presented for two ships using computer graphics. The contour plots of the near-field results have been compared with those obtained by the XYZFS computer program. Additional comparisons of the two codes have been made by plotting longitudinal cuts of the wave heights. The results show that--in spite of numerical noise in the computations of SWIMFS--the computed wave patterns behind ships are qualitatively correct, and the computed bow-wave elevations are comparable with those calculated using XYZFS.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1986
Accession Number
ADA169753

Entities

People

  • John G. Telste

Tags

DTIC Thesaurus Topics

  • Computations
  • Computer Programs
  • Computers
  • Equations
  • Far Field
  • Froude Number
  • Integral Equations
  • Integrals
  • Mathematics
  • Measurement
  • Near Field
  • Potential Flow
  • Sea Level
  • Ship Hulls
  • Standards
  • Synthetic Aperture Radar
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Computer Science.
  • Marine Hydrodynamics