Concept design of a new deep draft platform

Li, Bin Bin; Ou, Jinping

doi:10.1007/s11804-010-1002-9

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…This HOBEM model computes six-degrees-of-freedom wave-induced motions of multiple bodies with arbitrary shapes in frequency domain. More applications of the program WAFDUT can be found in [42,43].…”

Section: Methodsmentioning

confidence: 99%

Hydrodynamic Performance of an Array of Wave Energy Converters Integrated with a Pontoon-Type Breakwater

et al. 2018

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The cost of wave energy converters (WECs) can be reduced significantly by integrating WECs into other marine facilities, especially in sea areas with a mild wave climate. To reduce the cost and increase the efficiency, a hybrid WEC system, comprising a linear array (medium farm) of oscillating buoy-type WECs attached to the weather side of a fixed-type floating pontoon as the base structure is proposed. The performance of the WEC array is investigated numerically using a boundary element method (BEM) based on the linear potential flow theory. The linear power takeoff (PTO) damping model is used to calculate the output power of the WEC array. The performance of the WEC array and each individual WEC device is balanced by using the mean interaction factor and the individual interaction factor. To quantify the effect of the pontoon, the hydrodynamic results of the WEC arrays with and without a pontoon are compared with each other. Detailed investigations on the influence of the structural and PTO parameters are performed in a wide wave frequency range. Results show that the energy conversion efficiency of a WEC array with a properly designed pontoon is much higher than that without a pontoon. This integration scheme can achieve the efficiency improvement and construction-cost reduction of the wave energy converters.

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Section: Methodsmentioning

confidence: 99%

Hydrodynamic Performance of an Array of Wave Energy Converters Integrated with a Pontoon-Type Breakwater

et al. 2018

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“…Li [8] designed and analysed the New Deep Draft Platform for the oil industry. A high order boundary element method, based on potential theory and modified Morison equations, was used to predict the hydrodynamic and viscous effects of this new concept platform.…”

Section: Fig 1 the Concept Of The Three-column Spar Platformmentioning

confidence: 99%

Analysis of the Hydrodynamic Properties of the 3-Column Spar Platform for Offshore Wind Turbines

Ciba

Dymarski

Grygorowicz

2022

Polish Maritime Research

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The article presents a design of a floating platform for offshore wind turbines. The concept is a modification of the Spar design and consists of three variable section columns connected to each other by a ballast tank in the lower part of the platform. This solution makes it possible to influence the position of the centre of buoyancy and the centre of mass of the structure. Compared to the classic Spar platform structure, the centre of buoyancy can be higher than mid-draft, which will provide the platform with greater stability. At the same time, this concept is better, in terms of technology, because of its modular structure and smaller bending radii.On the basis of the model testing performed, the hydrodynamic coefficients of the designed platform and its response to a given regular wave were determined (the transfer functions for heave and pitch motion were determined). Then, based on the damping coefficients, the platform was modelled in the ANSYS AQWA program and the results were very similar.

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