Response prediction of long flexible risers subject to forced harmonic vibration

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概要

• 論文の詳細を見る

• Several research efforts have been directed toward the development of models for response prediction of flexible risers. The main difficulties arise from the fact that the dynamic response of flexible risers involves highly nonlinear behavior and a self-regulated process. This article presents a quasi-steady approach for response prediction of oscillating flexible risers. Amplitude-dependent lift coefficients are considered, as is an increased mean drag coefficient model during synchronization events. Experimental validation of the proposed model was carried out using a 20-m riser model excited by forced harmonic vibration at its top end. Large variations in the hydrodynamic force coefficients, a low mass ratio value, and synchronization events are the main features of the model presented in this article. Experimental validation was provided for the asymmetric, transverse, diagonal, and third vortex regimes.

• 2010-03-01

著者

• Riveros Carlos

  Dept. Of Civil And Earth Resources Eng. Kyoto University

• Utsunomiya Tomoaki

  Dept. Of Civil And Earth Resources Eng. Kyoto University

• Utsunomiya Tomoaki

  Department Of Civil And Earth Resources Engineering Kyoto University

• Maeda Katsuya

  Deep Sea Technology Research Group Nmri

• Itoh Kazuaki

  Marine Technology Research and Development Program, Marine Technology Center, JAMSTEC

• Maeda Katsuya

  Deep Sea Technology Research Group National Maritime Research Institute

• RIVEROS Carlos

  Department of Civil and Earth Resources Engineering, Kyoto University

• Itoh Kazuaki

  Marine Technology And Development Program Marine Technology Center Jamstec

• Riveros Carlos

  Department Of Civil And Earth Resources Engineering Kyoto University

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• CFD Modeling of Fluid-Structure Interaction for Oscillating Flexible Risers(Summaries of Papers Published by Staff of National Maritime Research Institute)
• 2007S-G4-22 A Quasi-steady Approach for Dynamic Response of Flexible Risers at Low Values of Beta Parameter
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