Validation of Waveload Version 1.0 for the Case of a Destroyer in Regular Head Waves


  1. Qiu, W.
  2. Hsiung, C.C.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Dalhousie Univ, Halifax NS (CAN) Centre for Marine Vessel Development and Research
The prediction of ship motions, sea loads and hydrodynamic pressure distribution over a ship hull is an essential component of ship structural design. The immediate goal is to provide accurate hull pressure input for the finite-element structural analysis. To this end, the computer program WAVELOAD version 1.0 has been developed to predict ship motions, wave loads, and hydrodynamic pressure in the frequency domain based on the three-dimensional panel method. This report describes the experimental tests with a destroyer model in head seas. The total factor error (TFE) was used as an index of correlation of predicted and measured transfer functions. By examining TFE values, one can assess not only the degree of correlation between predicted and measured response transfer functions quantitatively, but also the reliability of the experimental data. The TFE analysis was applied to the predictions by two other computer programs, PRECAL and SHIPMO7, as well as to those by WAVELOAD. The results show that WAVELOAD is a reliable software package for sea-load predictions.
Computer programs (WAVELOAD);Frequency domain;Hull pressure;Panel methods;3-dimensional panel method;Computer program validation;Hydrodynamic pressures;Sea loads
Report Number
DREA-CR-98-452 — Contractor Report
Date of publication
01 Dec 1998
Number of Pages
Hardcopy;Document Image stored on Optical Disk

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