Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference
Shanghai, China, June 5–10, 2022
Copyright © 2022 by the International Society of Offshore and Polar Engineers (ISOPE)
ISBN 978-1-880653-81-4; ISSN 1098-6189

www.isope.org

Dynamic Analysis of an Integrated Floating Structure Consisting of a Barge offshore Wind Turbine with
an Aquaculture Cage
Yuting Zhai1; Chenggen Xu2; Haisheng Zhao1*; Wenhua Wang1; and Xin Li1

1State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology

Dalian, China

2CGN Rudong Offshore Wind Power Co.,Ltd.

Nantong, China* Corresponding author. E-mail: hzhao@dlut.edu.cn (H. Zhao)

ABSTRACTEurope. For example, the German government expects to install windturbines of 200,000-250,000 kW by 2030 (Faber et al., 2006). Due to theRecently, the exorbitant investments limit the commercial development

abundance of offshore wind energy and the ability to reduce the impactof floating offshore wind farms, especially for the transportation andof noise on humans, etc., it is more suitable for the development of theinstallation of floating substructures. In view of the considerable profits

wind power industry in the sea. At present, the nearshore wind energyof fish farming and improving the economy of floating offshore winddevelopment has been completed, the future development of offshore

turbines (FOWTs), an integrated floating structure consisting of a barge-wind turbines will certainly be from shallow to deep sea. Therefore, thetype FOWT with an aquaculture cage is proposed in this study. The

floating offshore wind turbine (FOWT) proposed by Heronemus (1972)

coupled analysis model of the integrated floating structure is established

has begun to attract more attention. With the advance of floating

using the simulation tool AQWA to investigate its dynamic

turbines, the main mainstream forms are now: spar-type (Jonkman,characteristics. In the analysis, it can be seen that the thrust force set by2010), semi-submersible-type (Robertson et al., 2014; Zhao et al., 2021),

user-force with relative wind speed is more matching with the actual

tension leg type (Ren et al., 2022; Oguz et al., 2018), and barge-typesituation. The platform of barge-type FOWT with an aquaculture cage isplatform (Ding et al., 2015). Each conceptual platform design has its

a reasonable design, since the motion response meets safetycharacteristics. For example, spar-type platform has the advantages ofspecifications for various environmental load conditions encountered inexcellent stability and simple structure; the features of the semi-practice. Moreover, it is noted that the mean value of the motion response

submersible platform are easy installation and shallow draft; barge-type

varies mainly with the wind speed, while the standard deviation is mainly

platform is characterized by its simplicity of manufacture (Chuang et al.,influenced by the wave height. And the presence of ocean currents is2021) and long service life. With the development of floating windextremely important for analyzing the motion response of the barge-typeturbines, excellent structures have been designed by scholars in addition

FOWT with an aquaculture cage.

to the classic forms, such as the combined wind-wave energy converter(Wang et al., 2022).

KEY WORDS: Barge offshore wind turbine; Aquaculture cage;
Coupled analysis; Dynamic responses.

With the application of moon pools in barge-type platforms, the barge-INTRODUCTIONtype offshore wind turbines began to be noticed by scholars. Vijay et al.

Developing wind power vigorously is a feasible means to reducemoon pools of a barge-type platform. Kosasih et al. (2019) compared theenvironmental pollution and traditional energy consumption. Manymotion characteristics of two types of barge-type models in a wave tankcountries have focused on their wind power industry, especially inexperiment. A barge-type FOWT was installed in Kitakyushu with a(2016) used FAST software to study the motion responses of several

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