Ocean Systems Engineering

  • 제9권3호
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  • Pages.241-259
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  • 2019
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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

VIV simulation of riser-conductor systems including nonlinear soil-structure interactions

  • Ye, Maokun (Department of Ocean Engineering, Texas A&M University) ;
  • Chen, Hamn-Ching (Zachry Department of Civil Engineering and Department of Ocean Engineering, Texas A&M University)
  • 투고 : 2019.02.02
  • 심사 : 2019.06.13
  • 발행 : 2019.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a fully three-dimensional numerical approach for analyzing deepwater drilling riser-conductor system vortex-induced vibrations (VIV) including nonlinear soil-structure interactions (SSI). The drilling riser-conductor system is modeled as a tensioned beam with linearly distributed tension and is solved by a fully implicit discretization scheme. The fluid field around the riser-conductor system is obtained by Finite-Analytic Navier-Stokes (FANS) code, which numerically solves the unsteady Navier-Stokes equations. The SSI is considered by modeling the lateral soil resistance force according to nonlinear p-y curves. Overset grid method is adopted to mesh the fluid domain. A partitioned fluid-structure interaction (FSI) method is achieved by communication between the fluid solver and riser motion solver. A riser-conductor system VIV simulation without SSI is firstly presented and served as a benchmark case for the subsequent simulations. Two SSI models based on a nonlinear p-y curve are then applied to the VIV simulations. Also, the effects of two key soil properties on the VIV simulations of riser-conductor systems are studied.

키워드

참고문헌

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