A STUDY OF A HEAVING VERTICAL CYLINDER IN A TOWING TANK

The effects of tank walls on experimentally measured hydrodynamic coefficients are of concern to researchers. In this numerical study of heaving vertical cylinders in a towing tank, the nonresonant, linear potential flow around a heaving cylinder in a towing tank has been formulated. The method used is based on a matching technique and on Graf's addition theorem. The calculations suggest that "blockage" or "wall effect" is more pronounced in shallow water tanks. A resonant frequency omega sub r corresponds to the frequency of a wave with a wave length equal to the width of the tank. For frequencies higher than omega sub r, hydrodynamic coefficients are very close to infinite domain values for large values of the ratio of the tank beam to the cylinder radius. For frequencies less than omega sub r, blockage correction to the hydrodynamic coefficients is necessary.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00224502
• Supplemental Notes:
  • Journal article
• Authors:
  • Calisal, S M
  • Sabuncu, T
• Publication Date: 1989-6

Media Info

• Features: References;
• Pagination: 8 p.
• Serial:
  • Journal of Ship Research
  • Volume: 33
  • Issue Number: No.2
  • Publisher: Society of Naval Architects and Marine Engineers
  • ISSN: 0022-4502
  • EISSN: 1542-0604
  • Serial URL: https://onepetro.org/jsr

Subject/Index Terms

• TRT Terms: Container tanks; Cylinders (Geometry); Shells (Structural forms); Towing devices; Wall effect
• Uncontrolled Terms: Cylindrical shells; Heaving
• Old TRIS Terms: Towing tanks; Verticality
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00657713
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM