Session: 05-02-02 Aquaculture and Related Technology II

Paper Number: 125771

125771 - Influence of Configuration of Spherical Artificial Reefs on Scouring Around Offshore Wind Power Pile Foundation 

The integration of offshore wind power and marine ranching industries represents a significant pathway for the collaborative development of marine fisheries and clean energy in the future. Artificial reefs play a pivotal role in marine ranching, thus it is crucial to scientifically arrange artificial reefs for scour protection around the wind power pile. In present study, a three-dimensional numerical model was established in this study using a prototype of China's first offshore wind power-marine ranch demonstration project. The Reynolds-averaged Navier-Stokes (RANS) and sediment transport equations were utilized to simulate flow movement and sediment scour between the wind power pile foundation and artificial reefs.

The numerical results indicate that the artificial reefs will generate a complex wake region, resulting in significant turbulence fluctuations between the artificial reef and the wind power pile foundation. Consequently, this will exacerbate both the scour depth and volume around the wind power pile foundation. However, the scour process will gradually diminish in its impact as the distance between the wind power pile foundation and the artificial reef increases. At a fixed distance, there exists a nonlinear relationship between the variation in spacing between two artificial reefs and the changes in scour around the wind power pile foundation. A predictive formula for scour based on dimensionless parameters is derived. These findings can serve as a reference for arranging spherical artificial reefs around wind power pile foundations.

Presenting Author: Fenfang Zhao Ocean University of China

Presenting Author Biography: Fenfang Zhao Ph. D., Professor in Ocean University of China
1989.09-1993.07 Ocean University of Qingdao, majoring in Marine fisheries, Bachelor of Agronomy;
1993.07-1996.07 Ocean University of Qingdao, majoring in fishing science, Master degree in Agronomy;
2006.10-2010.3 PhD in Environmental Marine Engineering, Department of Engineering, University of Tokyo, Japan.
2018.09-2019.09 Visiting Scholar, University of Stavanger, Norway
1996.07 Graduated with a master's degree and worked as a teaching assistant, lecturer, associate professor and professor in the College of Fisheries, Ocean University of China.
She is mainly engaged in the research of hydrodynamics, fishing gear theory and fishing gear method of facility fishery engineering (cage, artificial reef, floating wave breakwater). She has presided over or participated in nearly 30 projects including the National Natural Science Foundation, National Key research and development program projects, National 863 projects, national science and technology support, public welfare industry special projects, and major projects of Shandong Province. She has published more than 80 academic papers in important academic journals in this field at home and abroad, including more than 30 SCI/EI articles, and obtained more than 10 patents and software registration rights.

Authors:

Shuwei Han China Three Gorges Renewables (Group) Co.,Ltd. Shandong Branch
Dawei Li China Three Gorges Renewables (Group) Co.,Ltd. Shandong Branch
Mingda Yang Ocean University of China
Yanli Tang Ocean University of China
Fenfang Zhao Ocean University of China
Liuyi Huang Fisheries College, Ocean University of China