Temporal Evolution of Seabed Scour Induced by Darrieus-Type Tidal Current Turbine

Chong Sun, Wei Haur Lam*, Su Shiung Lam, Ming Dai, Gerard Hamill

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)
1 Downloads (Pure)

Abstract

The temporal evolution of seabed scour was investigated to prevent damage around a monopile foundation for Darrieus-type tidal current turbine. Temporal scour depths and profiles at various turbine radius and tip clearances were studied by using the experimental measurements. Experiments were carried out in a purpose-built recirculating water flume associated with 3D printed turbines. The scour hole was developed rapidly in the initial process and grew gradually. The ultimate equilibrium of scour hole was reached after 180 min. The scour speed increased with the existence of a rotating turbine on top of the monopile. The findings suggested that monopile foundation and the rotating turbine are two significant considerations for the temporal evolution of scour. The scour depth is inversely correlated to the tip-bed clearance between the turbine and seabed. Empirical equations were proposed to predict the temporal scour depth around turbine. These equations were in good agreement with the experimental data.

Original languageEnglish
Article number896
JournalWater (Switzerland)
Volume11
Issue number5
Early online date28 Apr 2019
DOIs
Publication statusPublished - 01 May 2019

Bibliographical note

Funding Information:
Funding: This research was funded by Natural Science Foundation of Tianjin City: 18JCYBJC21900 and The APC was funded by Natural Science Foundation of Tianjin City: 18JCYBJC21900.

Publisher Copyright:
© 2019 by the authors.

Keywords

  • Ocean renewable energy
  • Seabed scour
  • Tidal current turbine

ASJC Scopus subject areas

  • Biochemistry
  • Geography, Planning and Development
  • Aquatic Science
  • Water Science and Technology

Fingerprint

Dive into the research topics of 'Temporal Evolution of Seabed Scour Induced by Darrieus-Type Tidal Current Turbine'. Together they form a unique fingerprint.

Cite this