AN IMPROVED STRIP THEORY PROGRAM FOR SHIP MOTIONS AND SEA LOADS IN WAVES

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Authors
  1. McTaggart, K.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The paper describes enhancements to the strip theory program SHIPMO. The goal of recent development work was to produce a robust code for predicting both ship motions and sea loads in waves. A new boundary element method eliminates irregular frequencies of sectional hydrodynamic coefficients. Problems with predictions at low encounter frequencies are circumvented with a new extrapolation scheme. These improvements remove two sources of potentially large errors for predicted motions and sea loads. A new added resistance capability uses two different near-field methods for short and long wavelength regimes. Motion and sea load predictions include appendage and viscous forces for the lateral plane. Validation results for a warship indicate good agreement of predicted motions and sea loads with experiments.
Keywords
Strip theory
Date of publication
01 Jun 1997
Number of Pages
10
DSTKIM No
97-03421
CANDIS No
503454
Format(s):
Hardcopy;Document Image stored on Optical Disk

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