AN APPROXIMATE CALCULATION OF MANOEUVRING INTERACTION FORCES BETWEEN TWO SHIPS (CONTINUED)

In this paper, a simplified method for calculating the manoeuvring hydrodynamic forces on a ship's hull moving parallel to a single side wall in shallow water is developed using the linear lifting surface theory. Calculated results agree approximately with the experimental results obtained by changing the distance between the ship and the wall, and water depth. In order to clarify nonlinear characteristics of hydrodynamic forces on a ship caused by the presence of a side wall, a basic calculation concerning hydrodynamic forces on a flat plate wind inclined to wall surface is examined. By using the image method, the calculation is made for the wing inclined at a large angle of attack in the proximity of a wall plane, based on Bollay's nonlinear wing theory. Experimental results indicating unsymmetrical variation of hydrodynamic forces with positive or negative angles of attack, can be explained well by the theoretical values. Experiments on interaction forces between two ships were performed by employing slender-body ships. Calculated results agreed qualitatively with the experimental results

• Supplemental Notes:
  • Kansai Soc Naval Arch J, n 216, Sept 1991, p 185 [10 p, 6 ref, 1 tab, 11 fig]
• Authors:
  • Yumuro, A
• Publication Date: 1991

Language

• Japanese

Subject/Index Terms

• TRT Terms: Aerodynamic lift; Hydrodynamic pressure; Maneuvering
• Uncontrolled Terms: Interactions
• Old TRIS Terms: Hydrodynamic forces; Lifting surface theory
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00701928
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM