AN IMPROVED FLUID LOADING MODEL FOR CYLINDERS IN RANDOM WAVES

The problem of predicting the hydrodynamic forces on fully submerged horizontal cylinders in random waves, from a knowledge of the time-varying wave elevation, is considered. A new dynamic model is proposed, derived from the results of a comprehensive set of new, regular wave experiments, which takes account of both memory and non-linear effects. The model is composed of two parallel paths, one containing a linear transfer function and the other a zero-memory non-linearity in series with another linear transfer function. Application of the mode to random wave test data shows that the use of this new model, in a predictive mode, leads to significant improvements, compared with the use of Morison's equation, particularly with regard to the prediction of peak forces, where the greatest need for improvement exists.

  • 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 179 [10 p, 16 ref, 1 tab, 8 fig]
  • Authors:
    • Roberts, J B
    • DUNNE, J F
    • Ding, Z
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00717739
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 4 1996 12:00AM