ON THE CHARACTERISTICS AND LONG-TERM PREDICTION PROCEDURE OF WAVE-INDUCED PRESSURE FLUCTUATION ON A VLCC HULL

There has been much discussion on the characteristics of wave-induced pressure fluctuation on the side shells of VLCCs since a considerable number of fatigue cracks have been found on side- longitudinals of second generation VLCCs. The main theme of the discussion is whether the characteristics of pressure fluctuation are predictable even for small values of wave-length to ship-length ratio such as 0.1-0.3 and how peak-to-trough value can be obtained for wave-induced pressure fluctuation on the side shell close to the load- water-line. Tank experiments on a scale model ship were carried out to answer these questions, and it was shown that the measured results agree with the results calculated by the strip method after a simple correction on non-linearity effect caused by the crossing of the free-surface. Results of long-term prediction with the same correction also show good agreement with the results of the full-scale measurements.

  • Supplemental Notes:
    • J Soc Naval Arch Japan, v 176, Dec 1994, p 375 [11 p, 14 ref, 6 tab, 29 fig]
  • Authors:
    • Toki, N
    • Fukushima, Y
  • Publication Date: 1994

Language

  • Japanese

Subject/Index Terms

Filing Info

  • Accession Number: 00710734
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM