Ocean Systems Engineering

  • 제7권1호
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  • Pages.21-38
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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

Tension variations of hydro-pneumatic riser tensioner and implications for dry-tree interface in semisubmersible

  • Kang, Hooi-Siang (Faculty of Mechanical Engineering, Universiti Teknologi Malaysia) ;
  • Kim, Moo-Hyun (Department of Ocean Engineering, Texas A&M University) ;
  • Aramanadka, Shankar S. Bhat (Sabah Shell Petroleum Co. Ltd.)
  • 투고 : 2016.11.24
  • 심사 : 2017.02.05
  • 발행 : 2017.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

In real sea environments, excessive dynamic axial tension variations can be exerted on the top-tensioned risers (TTRs) and lead to structural integrity issues. The traditional riser-tension-variation analysis, however, by using parametric formulation is only conditionally valid under certain strict limits and potentially underestimates the total magnitudes of tension variations. This phenomenon is especially important for the long stroke tensioner in dry-tree semisubmersible with larger global heave motion and longer stroke. In this paper, the hydro-pneumatic tensioner (HPT) is modeled in detailed component-level which includes a set of hydraulic and pneumatic components. The viscous fluid frictional effect in the HPT is considered. The main objectives are (i) to develop a detailed tension variation model of the HPT; (ii) to identify the deviations between the conventional parametric formulation and component-level formulation; (iii) to numerically analyze the tension variation of long stroke tensioner in a dry-tree semisubmersible (DTS). The results demonstrate the necessity of component-level formulation for long stroke tensioner in the development of DTS.

키워드

참고문헌

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피인용 문헌

  1. Modeling Approach of Hydropneumatic Tensioner for Top-Tensioned Riser vol.140, pp.5, 2018, https://doi.org/10.1115/1.4040241
  2. Suppression of tension variations in hydro-pneumatic riser tensioner by using force compensation control vol.7, pp.3, 2017, https://doi.org/10.12989/ose.2017.7.3.225
  3. Incorporating magneto-Rheological damper into riser tensioner system to restrict riser stroke in moderate-size semisubmersibles vol.8, pp.2, 2017, https://doi.org/10.12989/ose.2018.8.2.101
  4. Passive Heave Compensator Design and Numerical Simulation for Strand Jack during Lift Operation in Deep Water vol.9, pp.7, 2017, https://doi.org/10.3390/jmse9070714
  5. Frequency Response Function and Design Parameter Effects of Hydro-Pneumatic Tensioner for Top-Tensioned Riser vol.9, pp.12, 2017, https://doi.org/10.3390/pr9122239