Ocean Systems Engineering

  • 제7권3호
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  • Pages.195-223
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  • 2017
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  • 2093-6702(pISSN)
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  • 2093-677X(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

CFD simulation of vortex-induced vibration of free-standing hybrid riser

  • Cao, Yi (Department of Ocean Engineering, Texas A&M University) ;
  • Chen, Hamn-Ching (Zachry Department of Civil Engineering, Texas A&M University)
  • 투고 : 2017.06.29
  • 심사 : 2017.08.27
  • 발행 : 2017.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents 3D numerical simulations of a Free Standing Hybrid Riser under Vortex Induced Vibration, with prescribed motion on the top to replace the motion of the buoyancy can. The model is calculated using a fully implicit discretization scheme. The flow field around the riser is computed by solving the Navier-Stokes equations numerically. The fluid domain is discretized using the overset grid approach. Grid points in near-wall regions of riser are of high resolution, while far field flow is in relatively coarse grid. Fluid-structure interaction is accomplished by communication between fluid solver and riser motion solver. Simulation is based on previous experimental data. Two cases are studied with different current speeds, where the motion of the buoyancy can is approximated to a 'banana' shape. A fully three-dimensional CFD approach for VIV simulation for a top side moving Riser has been presented. This paper also presents a simulation of a riser connected to a platform under harmonic regular waves.

키워드

참고문헌

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피인용 문헌

  1. Free vibration analysis of large sag catenary with application to catenary jumper vol.10, pp.1, 2020, https://doi.org/10.12989/ose.2020.10.1.067