RINGING LOAD MODELS VERIFIED AGAINST EXPERIMENTS

What is believed to be the main reason for discrepancies between measured and simulated loads in previous studies has been assessed. One has focused on the balance between second- and third-order load components in relation to what the authors have called "fat body" load correction. It is important to understand that the use of Morison strip theory in combination with second-order wave theory give rise to second- as well as third-order components in the horizontal force. A proper balance between second- and third- order components in horizontal force is regarded as the most central requirements for a sufficient accurate ringing load model in irregular seas. It is also verified that simulated second-order components are largely over predicted both in regular and irregular seas. Non- slender diffraction effects are important to incorporate in the FNV formulation in order to reduce the simulated second-order component and to match experiments more closely. A sufficient accurate ringing simulation model with the use of simplified methods is shown to be within close reach. Some further development and experimental verification must however be performed in order to take non-slender effects into account.

  • Supplemental Notes:
    • OMAE 1995, 14th Intl Conf on Offshore Mechanics & Arctic Engng; 18-22 June 1995; Copenhagen, Denmark. Sponsored by ASME et al. Procs. Publ by ASME, ISBN 0-7918-1306-1. Vol I, Pt A, p 223 [11 p, 15 ref, 1 tab, 7 fig]
  • Authors:
    • Krokstad, J R
    • Stansberg, C T
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00717742
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 4 1996 12:00AM