Wave-current forces on rectangular cylinder at low KC numbers

V. Vengatesan, K.S. Varyani, N.D.P. Barltrop

Research output: Contribution to journalConference Contributionpeer-review


This paper presents the results of wave and current forces acting on a surface piercing, vertical truncated rectangular cylinder. The combined wave-current effect has been produced by towing the cylinder in regular waves, along and opposite to the wave direction. Drag and Inertia coefficients are evaluated and are presented, as a function of KC number, for two aspect ratios of cylinders, equal to 1/2 and 2/1. The results show that drag and inertia coefficients are strongly affected by (i) variation in the aspect ratio of the cylinder and (ii) variation in the current speed. The comparison between measured forces and computed forces using Morison's equation shows good agreement.

Original languageEnglish
Pages (from-to)276-284
Number of pages9
JournalInternational Journal of Offshore and Polar Engineering
Issue number4
Publication statusPublished - 31 Dec 2000
EventThe Ninth International Offshore and Polar Engineering Conference - Brest, France
Duration: 30 May 19994 Jun 1999


  • aspect ratio
  • current
  • low KC numbers
  • rectangular cylinder
  • regular waves


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