A COMPARISON BETWEEN THEORETICAL AND MEASURED WAVES ABOVE A SUBMERGED RANKINE BODY

Abstract

A comparison is made of theoretical and measured wave patterns produced by a submerged Rankine body (7:1) moving at constant speed. The measurements were made for a range of Froude numbers, but for a single depth/ length ratio (1:3). Calculations were made for both the far and near fields. The former utilize the stationary phase approximation and the latter involve numerical integrations and include the local disturbance. In general, the agreement between theory and experiment is as good as the agreement between measurements taken at the same Froude number but for two different body lengths (4.5 and 9.0 feet). It is concluded from these tests that first-order wave theory predicts the shape and amplitude of the waves produced by a fully submerged body with sufficient accuracy for almost all practical purposes.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1966
Accession Number
AD0632718

Entities

People

  • B. Yim
  • C. C. Hsu

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Agreements
  • Amplitude
  • Cartesian Coordinates
  • Classification
  • Contractors
  • Equations
  • Experimental Data
  • Froude Number
  • Measurement
  • Model Basins
  • Near Field
  • Numerical Integration
  • Security
  • Ship Model Basins
  • Stationary
  • Surface Waves

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Marine Hydrodynamics