Calculation of Streamlines on the USNS DUTTON.

Abstract

Four computer calculations were made of the paths of streamlines on the hull of the USNS DUTTON, with and without a proposed keel sonar dome located on the ship's forebody. The calculations employed a potential flow computer program in which the free surface must be treated as a plane of symmetry, and a newer version of this program which can account for free-surface effects. Numerous computer-generated figures of the ship lines and streamlines are presented. The results briefly discussed. The calculations show that the streamlines which pass through the region of a keel-mounted acoustic receiver array located near amidships get no closer than six or seven feet to the ocean surface. Thus, air bubbles originating in the stem or bow region should not be swept past the receiver array by the streamlines and should not degrade receiver acoustic performance. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1977
Accession Number
ADA040713

Entities

People

  • C. W. Dawson
  • David W Taylor
  • H. T. Wang
  • N. M. White

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Computer Programs
  • Computers
  • Flow
  • Froude Number
  • Measurement
  • Models
  • Potential Flow
  • Shear Stresses
  • Ship Hulls
  • Ship Models
  • Sonar Domes
  • Stratified Fluids
  • Surface Properties
  • Three Dimensional
  • Turbulent Boundary Layer
  • Two Dimensional

Readers

  • Acoustical Oceanography.
  • Fluid Dynamics.
  • Marine Hydrodynamics