Accession Number : ADA115135

Title :   Nonlinear Large-Amplitude Low-Frequency Ship Motions,

Corporate Author : NAVAL ACADEMY ANNAPOLIS MD DIV OF ENGINEERING AND WEAPONS

Personal Author(s) : Salvesen,Nils

PDF Url : ADA115135

Report Date : Apr 1982

Pagination or Media Count : 30

Abstract : A new nonlinear time-domain method for predicting large amplitude motions for a ship advancing in a seaway has been developed. The seaway is represented by a second-order Stokes wave. A consistent nonlinear theory is derived by assuming that the frequency of encounter is small. Results obtained by computer codes show good agreement with linear theory for small-amplitude waves, whereas large differences are found between the nonlinear method and linear theory for steeper waves. (Author)

Descriptors :   *Boundary layer flow, *Time domain, *Nonlinear analysis, *Ship motion, Ship hulls, Mathematical prediction, Computer programs, Water waves, Ocean waves, Equations of motion, Machine coding, Ship bows, Destroyers, Amplitude

Subject Categories : Numerical Mathematics
      Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE