ON THE EXCITING FORCES ACTING UPON A SHIP IN REGULAR WAVES IN SHALLOW WATER

Exciting forces acting on a moving ship in a shallow water can be divided into two parts: The main exciting forces which are calculated according to the Krylov assumption (that is, the ship does not affect water pressure distribution) and the second which takes into account the hydrodynamic forces (damping and inertia) and is called the diffractional component of the exciting forces. Comparison of exciting forces defined according to the Krylov assumption with the experimental data in an infinite depth, shows that matching takes place when the length of the wave is much greater than the length of the ship. Attempts in taking into account the hydrodynamic forces for actual ships involves many mathematical difficulties even for infinite depth. In the case of shallow water the wave problem is not solved completely. In this paper the same assumptions are used: The hypothesis of Plane flow, and the characteristic speed is the speed of the wave profile variation in the vertical direction.

• Corporate Authors:

  University of Michigan, Ann Arbor

  Department of Naval Architects and Marine Engineers
  Ann Arbor, MI  United States  48109
• Authors:
  • Ankudinov, W K
• Publication Date: 1970-4

Media Info

• Features: References;
• Pagination: 14 p.

Subject/Index Terms

• TRT Terms: Navigation; Ship motion; Waves
• Old TRIS Terms: Regular waves; Shallow water effects; Wave effects
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00072743
• Record Type: Publication
• Source Agency: University of Michigan, Ann Arbor
• Report/Paper Numbers: No. 046
• Files: TRIS
• Created Date: Dec 31 1974 12:00AM