THE INFLUENCE OF TANK WALLS AND BOTTOM UPON LOW-FREQUENCY DAMPING

This paper studies the effects of tank walls upon the speed- dependent mean second order forces and the predicted values of the low-frequency damping for four structures: a simple, smooth floating hemisphere; a circular cylindrical storage tank; an offshore barge; and a semisubmersible in open water. An eigen-function expansion matching technique is used to predict the required first order velocity potentials. Added resistance force predictions are performed using near-field pressure integration analysis. The added resistance gradient (ARG) method is then used to predict the low- frequency damping coefficients of the structures in open-water and in-tank situations. The results presented are discussed in some detail.

  • Supplemental Notes:
    • Conference paper; Paper OTC-6223
  • Authors:
    • Hearn, G E
    • Liou, S Y
  • Conference:
  • Publication Date: 0

Media Info

  • Features: References;
  • Pagination: 11p.

Subject/Index Terms

Filing Info

  • Accession Number: 00660827
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM