WAVE DIFFRACTION FORCES FOR AN ARBITRARY BODY IN WAVE AND CURRENT

A diffraction problem for an arbitrary floating body in wave and current is studied by time domain analysis. It is proved mathematically that for an arbitrary floating body, the water-line integral terms in the formula of wave diffraction forces may vanish, if the fluid disturbance due to steady forward motion is not small on the free surface. Physically, the waterline integral terms are the effect of interactions between the steady forward motion and the unsteady ship oscillations. Diffraction forces are described in the paper according to the incident wave potential and the proposed auxiliary-radiation potential, therefore the diffraction forces in the time-domain are obtained without computing the diffraction potential itself.

• Supplemental Notes:
  • China Ship Scientific Research Centre, rpt 94003, June 1994 [8 p, 18 ref, 1 fig]
• Authors:
  • Zhou, Z
• Publication Date: 1994

Language

• English

Subject/Index Terms

• TRT Terms: Diffraction; Force; Ship motion; Time; Time domain analysis; Waves
• Old TRIS Terms: Wave diffraction; Wave forces on structures
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00709794
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM