Hydrodynamic damping and fatigue analysis of marine risers at low KC

Zhenguo Gao

Research output: ThesisDoctoral Thesis

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Abstract

Hydrodynamic damping, which is critical to the fatigue life estimation of water intake risers, remains unclear for low l(eulegan­Carpenter, say KC less than 5, flow regime. This thesis investigates the hydrodynamic damping of a riser with and without helical strakes at KC less than 5 experimentally and explores more appropriate hydrodynamic damping models at low KC. Models are proposed to simulate the hydrodynamic damping more accurately at this flow regime based on a series of experiments and numerical simulations. A framework based on the full-scale measurements is proposed to calculate the accumulated fatigue damage for risers in operation.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Zhao, Wenhua, Supervisor
  • Efthymiou, Mike, Supervisor
  • Cheng, Liang, Supervisor
  • Zhou, Tongming, Supervisor
Thesis sponsors
Award date10 May 2021
DOIs
Publication statusUnpublished - 2021

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