Offshore Steel Fish Farming Facility Integrated with Multi Vertical-axis Wind Turbines: A Conceptual Design and Hydrodynamic Analysis
Xiang Yuan Zheng1, Hua Dong Zheng2, Yu Lei3, David Kennedy4
1Xiang Yuan Zheng, Department of Ocean Science and Technology, Tsinghua University, Shenzhen, China.
2Hua Dong Zheng, Department of Civil Engineering, Tsinghua University, Beijing, China, Division of Ocean Science and Technology, Tsinghua University, Shenzhen, China.
3Yu Lei, Department of Civil Engineering, Tsinghua University, Beijing, China, Division of Ocean Science and Technology, Tsinghua University, Shenzhen, China.
4David Kennedy, School of Engineering Cardiff University, Wales.
Manuscript received on 15 May 2019 | Revised Manuscript received on 22 May 2019 | Manuscript Published on 10 July 2019 | PP: 133-139 | Volume-8 Issue-7C2 May 2019 | Retrieval Number: G10310587C219/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The concept presented in this study is a combination of multiple megawatt (MW) vertical-axis wind turbines (VAWTs) with a floating steel fish-farming cage (MV-FSFFC). The design of this structure is described in detail, showing that a square shaped fishing cage accommodates four 3MW-VAWTs as the floating foundation. The hydrodynamic program WAMIT is employed to calculate the floater’s motion response amplitude operators (RAOs) in sinusoidal waves of varying periods. The results show that the hydrodynamic performance of MV-FSFFC is better than OC3Hywind spar and OC4DeepCwind semisubmersible. The taut mooring system is adopted by this concept for stationkeeping. For 100-year design waves, the deterministic and stochastic extreme analyses of the mooring dynamic model for Stokes 5th-order wave and short term random waves are carried out. The whole structure exhibits outstanding hydrodynamic performances for its significantly small motions. Technically, MV-FSFFC owns strong competitiveness and wide prospects in offshore industry for both power exploitation and marine aquaculture in intermediate and deep waters.
Keywords: Hydro Dynamic Response, Fish-Farming Cage, Vertical-Axis Wind Turbine, Stochastic Waves.
Scope of the Article: Computational Techniques in Civil Engineering