A THEORETICAL AND NUMERICAL MODEL OF SHIP MOTIONS IN HEAVY SEAS

The paper provides a description of a theoretical model of ship interaction with heavy seas. In the model the non-linear scattering problems of wave-ship interaction is formulated and solved in the time domain on the basis of the weak scatter hypothesis and with the use of the method of modal potentials. This results in a non-linear scattering problem with respect to the oncoming wave potential (and, therefore, amplitude), which is reduced to a quasi-linear form by means of the modal potentials method. In this way the conceptual framework of the practising naval architect is expanded to cover the non-linear and transient flow phenomena related to ship motions in waves. On that basis, an efficient numerical model is developed which utilises the latest achievements in the development of methods for the computation of radiation potentials and forces, but does not require a super-computer processing capability. The example computations confirm the applicability and efficiency of the models and the validity of the weak scatterer hypothesis.

• Supplemental Notes:
  • SNAME Trans, v 99, 1991, p 319 [31 p, 42 ref, 2 tab, 15 fig]
• Authors:
  • Pawlowski, J S
  • Bass, D W
• Publication Date: 1991

Language

• English

Subject/Index Terms

• TRT Terms: Mathematical models; Ship motion
• Uncontrolled Terms: Numerical models
• Old TRIS Terms: Rough seas; Wave loads on ships
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00703786
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM