Accession Number:

ADA066521

Title:

Hydrodynamic Interaction of Waves with a Large Displacement Floating Body.

Descriptive Note:

Interim rept. Apr 76-Aug 77,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s):

Report Date:

1977-09-15

Pagination or Media Count:

160.0

Abstract:

This report describes the analytical method and numerical procedure for the calculation of the wave pressure distribution and resulting induced forces and moments acting on large displacement bodies in the sea. The added mass and damping coefficients for the structure oscillating in all six degrees of freedom is computed. Then, the hydrodynamic coefficients associated with both the wavestructure interaction and the oscillation of the structure are determined by use of a Greens function method using quadralateral elements of constant source strength which applies to large structures of rather general shape. The analysis is based on linear theory and viscous effects are neglected on the basis that the size of the structure is large in relation to the amplitude of the incident wave. Also, the equations of motion for a free-floating body are developed which yields the dynamic response of a floating body with linear mooring line forces. Finally, the computer program capable of carrying out the numerical calculations is outlined and the inputoutput is discussed in some detail. Author

Subject Categories:

  • Physical and Dynamic Oceanography
  • Electric Power Production and Distribution
  • Marine Engineering
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE