Three Dimensional Ship Hydrodynamic Coefficients Using the Zero Forward Speed Green Function

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Authors
  1. McTaggart, K.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
Abstract
This report presents a method for predicting ship hydrodynamic coefficients and pressures in waves. Computations are performed in the frequency domain using the Green function for zero forward speed. Pressures and coefficients at non-zero forward speed are computed using extensions to zero speed results. The approach has been implemented using the Python programming language. The present implementation gives robust results over a wide range of wave frequencies. A new algorithm facilitates efficient computation of hydrodynamic terms for a large number of combinations of ship speed, heading, and incident wave freuqency. Sample computations for the HALIFAX class demonstrate application of the method.

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Keywords
Panel methods;Sea loads;Frequency domain;Irregular waves
Report Number
DRDC-ATLANTIC-TM-2002-059 — Technical Memorandum
Date of publication
01 Apr 2002
Number of Pages
66
DSTKIM No
CA021233
CANDIS No
517953
Format(s):
CD ROM

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