THE ADDED MASS OF BODIES HEAVING AT LOW FREQUENCY IN WATER OF FINITE DEPTH

Numerical results for the added mass of a heaving two-dimensional body in finite-depth water show that the zero-frequency limit is different for the cases of a surface-piercing body and a bottom-mounted body of the same wetted shape. At first sight, this may appear surprising as the limiting boundary-value problems for the potentials involved are identical. However, the solutions are indeterminate to within an additive constant and it is the value of this constant that accounts for the difference. In the present work, the method of matched asymptotic expansions is used to show that the added mass limits for the two cases differ by an amount that depends very simply on the geometry of the bodies.

• Supplemental Notes:
  • Appl Ocean Res, v 13 n 1, Feb 1991, p 12 [5 p, 18 ref, 1 tab, 1 fig]
• Authors:
  • McIver, P
  • Linton, C M
• Publication Date: 1991

Language

• English

Subject/Index Terms

• TRT Terms: Numerical analysis
• Uncontrolled Terms: Bodies; Two dimensional
• Old TRIS Terms: Added mass
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00700364
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM