Wave-current forces on rectangular cylinder at low KC numbers

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

Research output: Contribution to journalConference Contribution

Abstract

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
Volume10
Issue number4
Publication statusPublished - 31 Dec 2000
EventThe Ninth International Offshore and Polar Engineering Conference - Brest, France
Duration: 30 May 19994 Jun 1999

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Drag
Aspect ratio
Piercing

Keywords

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

Cite this

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title = "Wave-current forces on rectangular cylinder at low KC numbers",
abstract = "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.",
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Wave-current forces on rectangular cylinder at low KC numbers. / Vengatesan, V.; Varyani, K.S.; Barltrop, N.D.P.

In: International Journal of Offshore and Polar Engineering, Vol. 10, No. 4, 31.12.2000, p. 276-284.

Research output: Contribution to journalConference Contribution

TY - JOUR

T1 - Wave-current forces on rectangular cylinder at low KC numbers

AU - Vengatesan, V.

AU - Varyani, K.S.

AU - Barltrop, N.D.P.

PY - 2000/12/31

Y1 - 2000/12/31

N2 - 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.

AB - 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.

KW - aspect ratio

KW - current

KW - low KC numbers

KW - rectangular cylinder

KW - regular waves

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JO - International Journal of Offshore and Polar Engineering

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SN - 1053-5381

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