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A feasibility study of reducing scour around monopile foundation using a tidal current turbine

Lookup NU author(s): Dr Wenxian Yang

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


Abstract

The monopile foundations of offshore wind turbines in shallow waters are susceptible to be affected by tidal scour, which takes away the sand and soil round the monopiles and poses a serious threat to the safety of the turbines. To mitigate this issue, much effort has been made previously. However, all of the existing protective measures do not have added value other than scouring mitigation. In view of this, a new scour mitigation measure that utilizes tidal current turbine (TCT) is investigated in this study, which can not only reduce the scour around the wind turbine foundation but can also generate clean power simultaneously. In the research, the proposed method is studied by using a combined numerical simulation and laboratory testing approach. Both numerical calculation and experimental results have shown that a TCT installed in front of the monopile foundation of an offshore wind turbine does have a positive role in reducing the scour around the foundation when it generates electricity in the meantime. Moreover, the contribution of the TCT to scour reduction can be further improved through optimizing its installation position in front of the wind turbine.


Publication metadata

Author(s): Yang B, Wei K, Yang W, Li T, Qin B

Publication type: Article

Publication status: Published

Journal: Ocean Engineering

Year: 2021

Volume: 220

Print publication date: 15/01/2021

Online publication date: 04/12/2020

Acceptance date: 16/11/2020

Date deposited: 16/12/2020

ISSN (print): 0029-8018

Publisher: Elsevier

URL: https://doi.org/10.1016/j.oceaneng.2020.108396

DOI: 10.1016/j.oceaneng.2020.108396


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