THE FREQUENCY-DOMAIN PREDICTION OF ADDED RESISTANCE OF SHIPS IN WAVES USING A NEAR-FIELD, 3-DIMENSIONAL FLOW METHOD

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Authors
  1. Hsiung, C.C.
  2. Huang, Z.J.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Technical Univ of Nova Scotia, Halifax NS (CAN) Centre for Marine Vessel Design and Research
Abstract
In the reported work, a numerical method for computing ship motion, hydrodynamic pressure distribution, sea loads, and added resistance in waves has been developed for a ship with steady forward speed. The method is based on the 3-D, zero-speed Green function in the frequency domain. The 3-D panel method is used in the numerical implementation. Improvement over the existing three dimensional, frequency domain program, SMCA3, has been made by including the steady flow effect on the unsteady wave field around the ship hull and by applying analytical formulae and Gaussian quadrature to the integration of the Green function over a flat panel. The new, improved program is called SMCA4. Coding work has been completed by using Fortran 77 ANSI. Three ships: Series 60, CB = 0.70; Series 60, CB = 0.80; and S-175, have been used for numerical computation in this report. Computed results are presented and found to have good agreement with model test data. As part of the project, a User's Guide of the developed computer program, SMCA4, is submitted separately with this report. The Source Code Listing with sample files is provided on a separate diskette.
Keywords
Sea loads;Panel methods;Computer programs (SMCA4)
Report Number
DREA-CR-95-484 — Contractor Report (Final)
Date of publication
01 Oct 1995
Number of Pages
84
DSTKIM No
96-02436
CANDIS No
228803
Format(s):
Document Image stored on Optical Disk;Hardcopy

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