Influence of Central Platform on Hydrodynamic Performance of Semi-Submerged Multi-Buoy Wave Energy Converter

Hu, Y.; Yang, Shufeng; He, Hongzhou; Chen, Hu

doi:10.3390/jmse8010012

Cited by 5 publications

(4 citation statements)

References 12 publications

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“…Until now, for the primary energy conversion system of the movable object type wave power generator, studies such as comparing and verifying the performance by changing the shape or angle of incidence of the floating body have been actively conducted [3][4][5][6][7][8][9]. In addition, many studies on efficiency analysis using experiments and simulation techniques have been performed on the movable object type wave power generator [10][11][12][13][14].…”

Section: Figurementioning

confidence: 99%

Conceptual Design Study Based on Reliability Assessment of Secondary Energy Conversion Mechanical System in Movable Object Type Wave Power Generator

Kim¹,

Park²,

Oh³

et al. 2022

Applied Sciences

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Movable object type wave power generators produce energy through the process of primary energy conversion, which converts the potential and kinetic energy of the waves into mechanical energy, secondary energy conversion that converts it into energy for generator operation using a mechanical system or hydraulic system, and final energy conversion, the last step in power generation. The secondary energy conversion system that transmits and amplifies energy according to the primary energy conversion needs to secure durability while power generation performance varies greatly depending on how the secondary energy conversion system is built. As a result, reliability assessment of systems based on system engineering are a very important issue. Therefore, in this study, for the conceptual design based on reliability assessment of the secondary energy conversion system, the system concept was established using the integrated computer-aided manufacturing (ICAM) definition for function modeling (IDEF0), a system analysis method, while necessary equipment and process flow diagrams (PFD) were derived. In addition, the database (DB) and formula of the secondary energy conversion system were constructed, and reliability assessment algorithms and programs were developed. Finally, the PFD and reliability assessment program were verified by applying them to a representative movable object type wave power generator.

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Section: Figurementioning

confidence: 99%

Conceptual Design Study Based on Reliability Assessment of Secondary Energy Conversion Mechanical System in Movable Object Type Wave Power Generator

Kim¹,

Park²,

Oh³

et al. 2022

Applied Sciences

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show abstract

“…Sea surface investigations can be completed using satellites or buoys [ 10 , 11 ]. Marine profile surveys are most often completed using submerged buoys [ 12 ]. The spacing of the measuring equipment on submerged buoys is relatively sparse, making it difficult to meet offshore survey profile resolution requirements [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Profile Autonomous Underwater Vehicle System for Offshore Surveys

Jiang

Yang

et al. 2023

Sensors

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Offshore marine engineering, offshore aquaculture, and offshore environmental protection require periodic offshore surveys. At present, the main means of offshore marine surveys are mooring buoys and marine survey ships. Anchored buoys are fixed in place for a long time, which affects the navigation of ships. Therefore, mooring buoys cannot be deployed over a large area with high density. The cost of marine survey ships is high, especially when multipoint synchronous marine surveys are needed, and marine survey ships cannot perform offshore surveys under bad sea conditions. A profile autonomous underwater vehicle system is developed to meet the requirements of multipoint short-term synchronous offshore surveys. It is a small, reusable, low-cost equipment designed to move up and down at a mooring position while measuring temperature, salinity, depth, and other quantities along a vertical water section. Profile autonomous underwater vehicles can be commanded remotely and report their measurements in near real-time via wireless telemetry. The time it takes for a profile AUV to move up and down can indicate the current velocity. Tests were carried out on a wharf and in offshore areas, and the results were satisfactory.

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“…More often, the buoy is used as the carrier, carrying wind turbine, tidal current turbine, wave converter and so on. This kind of tur-bine-buoy coupling objects are increasingly used in actual marine engineering [13][14][15][16], and the research methods adopted for these coupling objects are variable. Most of its research methods, first of all, carry out theoretical analysis on the carrying object, buoy and its mooring system, then calculate by numerical software, finally verify the nu-merical calculation results by physical model test.…”

Section: Introductionmentioning

confidence: 99%

Research on the Hydrodynamic Influence of Marine Data Buoy with Different Mooring Systems in Northern Part of Weihai: Simulation and experiment

Wang

Shangguan

et al. 2023

Preprint

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The hydrodynamic of marine data buoy and its mooring system has an important im-pact on its reliability, viability and adaptability at sea. In this paper, the numerical simulation, which is combined with physical model test verification, is adopted for studying hydrodynamic of data buoy, by using the measured data in the northern sea area of Chu Island, Weihai, Shandong Province, China. In the numerical analysis, the Advanced Quantitative Wave Analysis (AQWA) module in ANSYS is used, which includes frequency domain analysis and time domain analysis. The hydrodynamic performance of three different mooring systems, i.e. slack type, inverted S type and tension type, under the action of wind and waves coupling is studied. The model test of the buoy was carried out at the Environmental Laboratory in the National Ocean Technology Center of the Ministry of Natural Resources of China, and the scale of the model is determined to be 1:5, according to the laboratory test capacity and buoy prototype size. The results show that the inverted S type mooring system has higher reliability, while the tension type mooring system can obtain more accurate observation data, and the performance of the slack mooring system is between the two, among the three types of mooring systems. The research results can provide a reference for the design of other marine buoys and their mooring systems, and the validated numerical simulation method can be applied to the study of the survival performance of the buoy in long-term and extreme sea condition.

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Influence of Central Platform on Hydrodynamic Performance of Semi-Submerged Multi-Buoy Wave Energy Converter

Cited by 5 publications

References 12 publications

Conceptual Design Study Based on Reliability Assessment of Secondary Energy Conversion Mechanical System in Movable Object Type Wave Power Generator

Conceptual Design Study Based on Reliability Assessment of Secondary Energy Conversion Mechanical System in Movable Object Type Wave Power Generator

Profile Autonomous Underwater Vehicle System for Offshore Surveys

Research on the Hydrodynamic Influence of Marine Data Buoy with Different Mooring Systems in Northern Part of Weihai: Simulation and experiment

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