Wave interaction with a tethered buoy: SPH simulation and experimental validation

Understanding the interaction between surface waves and floating, moored structures is an important problem for the design of offshore structures. Experimental analysis has traditionally been used to study these problems, but using computational modelling could potentially reduce the number of experimental iterations required. In this paper the authors investigate the use of Smoothed Particle Hydrodynamics as a method for modelling these problems and thus reducing the number of experiments required. Validation data is obtained from generic experiments that contain the important features of wave-structure interaction. A moored spherical buoy oscillating both through and across a free surface, as well as interacting with an incident sinusoidal wave train are discussed and companion SPH simulations are run. The authors show here that SPH is capable of achieving accurate predictions of the buoy's motion when interacting with the free surface with appropriate particle resolutions. An initial transient motion was observed in the experiments as a long period oscillation of the buoy at its surge natural frequency. This transient motion was also predicted by SPH, but at reduced amplitude. Overall SPH was determined to be a good choice for modelling surface and structure interactions and the authors provide guidelines on appropriate particle resolution for such interactions.

• Record URL:
  • https://doi.org/10.1016/j.oceaneng.2018.03.001
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0029801818302324
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00298018
• Supplemental Notes:
  • Abstract reprinted with permission of Elsevier.
• Authors:
  • Gunn, David F
  • Rudman, Murray
  • Cohen, Raymond C Z
• Publication Date: 2018-5-15

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References;
• Pagination: pp 306-317
• Serial:
  • Ocean Engineering
  • Volume: 156
  • Issue Number: 0
  • Publisher: Pergamon
  • ISSN: 0029-8018
  • EISSN: 1873-5258
  • Serial URL: http://www.sciencedirect.com/science/journal/00298018

Subject/Index Terms

• TRT Terms: Buoys; Floating structures; Hydrodynamics; Simulation; Validation; Water waves
• Subject Areas: Hydraulics and Hydrology; Marine Transportation;

Filing Info

• Accession Number: 01672413
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 19 2018 9:34AM