Accession Number:

ADA181575

Title:

Surface Waves Generated by Submerged Bodies

Descriptive Note:

Final rept.

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD SHIP PERFORMANCE DEPT

Personal Author(s):

Report Date:

1987-06-01

Pagination or Media Count:

31.0

Abstract:

A computer code to compute surface waves generated by submarines is described. The code, based on slender body theory, treats an axisymmetric submersible as a distribution of constant density source segments along its centerline. The waves generated by a sail can be approximated in a similar manner using the thin ship approximation by positioning several source lines vertically one above the other. This code was used to compute the height of waves generated by five bare hulls. In addition, the contribution of a typical sail to surface waves was calculated. Some general observations on the character of submarine-generated waves are made. Wave height, when non-dimensionalized in terms of maximum hull radius, is dependent primarily upon Froude number and depth of submergence. Hull shape affects wave height to a lesser extent in two ways. One effect is local, changing the height of the waves directly over the submarine. The other is to change the height of the regular trailing waves by changing the effective wave-making length. The effect of the sail is found to be small at a large distance however, there is noticeable local effect. Keyword Ocean waves Submarine hulls Potential flow.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Submarine Engineering
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE