Hydrodynamics interactions on vortex-induced motions of a multi-body floating system

Yibo Liang, Longbin Tao

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)


In this study, numerical analysis has been carried out to investigate the hydrodynamic interactions of two multi-columns platforms. The objective of the work is to preliminarily evaluate the feasibility of a tension-leg-platform (TLP) dry tree unit (DTU) with tender assisted drilling (TAD) from the aspect of vortex-induced motions, characterized by the current. Two multi-columns floating platforms with a small gap ratio (28% of the overall platform width) are numerically simulated with the scenario of 3 degree-of-freedom (DOF) on the horizontal plane (including transverse, in-line and yaw motions). A comprehensive numerical simulation was conducted to examine the hydrodynamics interactions due to the flow over two floating platforms. Horizontal plane motions including transverse, in-line and yaw motions as well as drag and lift forces on both structures are discussed. The numerical data on the multi-body VIM interactions within the “lock-in” region will serve as a preliminary study for future coupled motions analysis of the TLP-TAD system design.
Original languageEnglish
Publication statusPublished - 9 Jun 2019
Event38th International Conference on Ocean, Offshore & Arctic Engineering - Scottish Event Campus, Glasgow, United Kingdom
Duration: 9 Jun 201914 Jun 2019
Conference number: 2019


Conference38th International Conference on Ocean, Offshore & Arctic Engineering
Abbreviated titleOMAE
Country/TerritoryUnited Kingdom
Internet address


  • vortex induced motion
  • semi submersible
  • multi-platforms system

Cite this