(KOCHIN-TYPE) SECOND-ORDER WAVE EXCITING FORCES

At the 4th workshop Lee (1989) presented a paper on expressions for the sum-frequency second order forces derived in the form of Fourier integrals of Kochin functions. In those expressions two types of force components are considered following the definition of Sclavounos (1988). One component (IB component) is due to the interaction between the body disturbance (B) and incident wave (I) and the other component (BB) is due to the interaction of two body disturbances. In this study the author concentrates on the computation of the IB component which involves one Fourier integration pair. For the wall-sided bodies this Fourier integration is performed using analytical techniques for large values of the wave number k. For small to moderate k numerical quadrature is used. The efficient evaluation of this part of the force is also important for the computation of the BB component, since the IB appears as the integrand of the Fourier integral for the BB component.

• Supplemental Notes:
  • Water waves and floating bodies; 5th Intl Workshop; 25-28 March 1990; Manchester UK. Sponsored by Marine Technology Directorate et al. Extended abstracts and discussions. Publ by Univ Manchester, ppr n 25, p 106 [3 p, 2 ref]
• Authors:
  • Lee, Brian Ho-Yin
  • C-H
• Publication Date: 1990

Language

• English

Subject/Index Terms

• TRT Terms: Floating structures; Force; Waves
• Uncontrolled Terms: Floating bodies; Wave forces
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00699304
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM