SECOND ORDER WAVE FORCES AND WAVE DRIFT DAMPING

A formulation for the second order wave drift force on an object sailing at low forward speed is derived from the law of momentum conservation over the fluid domain outside the body. For large second-order resonant motions the damping coefficients in the equation of motions are mainly determined by the influence of the motion on the drift force. Results are compared with direct pressure integration. The second order wave drift damping becomes significant due to the small first-order damping at small frequencies. A formulation for this coefficient is based on the speed dependency of the wave drift force.

• Supplemental Notes:
  • Ship Technology Research, v 38 n 4, Dec 1991, p 163 [10 p, 12 ref, 3 fig]
• Authors:
  • Hermans, A J
• Publication Date: 1991

Language

• English

Subject/Index Terms

• TRT Terms: Drift; Force; Mathematical analysis; Waves
• Uncontrolled Terms: Wave forces
• Old TRIS Terms: Damping factor; Drift forces
• Subject Areas: Geotechnology; Marine Transportation;

Filing Info

• Accession Number: 00702825
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM