COMPARISON OF THE SWAYING, ROLLING AND YAWING RESPONSE OPERATORS OBTAINED FROM COMPUTER PROGRAM ASYMO WITH EXPERIMENTAL AND THEORETICAL RESULTS

A semi-empirical method is employed to perform the theoretical computations of the hydrodynamic coefficients, forces, and responses of ship-forms oscillating in the asymmetric modes (sway, roll, and yaw). These results are compared to experimental and theoretical results in the literature. It is found that: the method can predict the hydrodynamic coefficients quite accurately for a range of frequencies provided the sectional beam to draft ratio is not exceptionally large (8.0 or so); the forces and moments obtained by this method show a high degree of correlation with experiment; and, the theoretical response amplitude operators can very accurately predict experimental values. However, the results of another theoretical method do not compare as well, especially in the case of roll. All the theoretical computations were performed on a digital computer by program ASYMO, which is documented in J.K.K. Look Laboratory Technical Report No. 26, including the theory on which it is based.

• Corporate Authors:

  Look Laboratory of Oceanographic Engineering

  Hawaii University
  Honolulu, H  United States  96813
• Authors:
  • Wybro, P G
  • Seidl, L H
• Publication Date: 1972-10

Media Info

• Pagination: 74 p.
• Serial:
  • Issue Number: 28

Subject/Index Terms

• TRT Terms: Force; Hydrodynamic pressure; Ship motion; Waves
• Uncontrolled Terms: Wave forces
• Old TRIS Terms: Hydrodynamic forces; Ship response
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00048440
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Tech Rpt
• Files: TRIS
• Created Date: Nov 14 1973 12:00AM