Hydrodynamic comparison of a semi-submersible, TLP, and Spar: Numerical study in the South China Sea environment

Li, Binbin; Liu, Kun; Yan, Gongwei; Ou, Jinping

doi:10.1007/s11804-011-1073-2

Cited by 16 publications

(4 citation statements)

References 9 publications

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“…According to the relevant research results, the semi-submersible foundation's motion response shows an interesting law. The surge response is similar to the spar type, but the pitch motion is smaller [32]. In recent years, scholars have conducted a lot of researches and proposed many concepts on FOWT.…”

Section: Introductionmentioning

confidence: 92%

Numerical Study of a Proposed Semi-Submersible Floating Platform with Different Numbers of Offset Columns Based on the DeepCwind Prototype for Improving the Wave-Resistance Ability

et al. 2019

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DeepCwind semi-submersible floating offshore wind turbines have been widely examined, and in some countries this type of floating offshore wind turbine has been adopted in the construction of floating wind farms. However, the DeepCwind semi-submersible floating offshore wind turbines still experience large surge motion that limits their operational time. Therefore, in this study, a semi-submersible floating platform with different numbers of offset columns, but with the same total weight, based on the DeepCwind prototype is proposed. From the free-decay test, it was found that the number of the floating columns will affect the natural frequency of the platform. Furthermore, the regular wave test in the time domain and the irregular wave test in the frequency domain show that increasing the number of the floating columns will reduce the surge motion greatly, while the effects in the heave and pitch motions are not obvious.

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Section: Introductionmentioning

confidence: 92%

Numerical Study of a Proposed Semi-Submersible Floating Platform with Different Numbers of Offset Columns Based on the DeepCwind Prototype for Improving the Wave-Resistance Ability

et al. 2019

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“…Floating substructures for offshore wind turbines are usually classified into three main categories: spar-buoy, semi-submersible or barge, and tension-leg platforms (as illustrated in Figure 5). These correspond to the categories of floating platforms that have been used in the oil and gas industry for several decades [56]. Several floating wind turbine prototypes and demonstration projects have been built in the last 15 years, e.g., the 80-kW Blue H turbine with a steel tension-leg platform, installed in 2007 in the Adriatic Sea 22 km off Puglia, Italy [57]; the 2.3-MW Hywind turbine with a ballast stabilized steel spar-buoy platform installed in 2009, 10 km off Karmøy, Norway, at 200 m water depth [58]; and the 2-MW WindFloat turbine with a steel semi-submersible platform installed in 2011, 6 km off Aguçadoura, Portugal, at 49 m water depth [59].…”

Section: Floating Substructuresmentioning

confidence: 99%

Concrete Support Structures for Offshore Wind Turbines: Current Status, Challenges, and Future Trends

2021

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Today’s offshore wind turbine support structures market is largely dominated by steel structures, since steel monopiles account for the vast majority of installations in the last decade and new types of multi-leg steel structures have been developed in recent years. However, as wind turbines become bigger, and potential sites for offshore wind farms are located in ever deeper waters and ever further from the shore, the conditions for the design, transport, and installation of support structures are changing. In light of these facts, this paper identifies and categorizes the challenges and future trends related to the use of concrete for support structures of future offshore wind projects. To do so, recent advances and technologies still under development for both bottom-fixed and floating concrete support structures have been reviewed. It was found that these new developments meet the challenges associated with the use of concrete support structures, as they will allow the production costs to be lowered and transport and installation to be facilitated. New technologies for concrete support structures used at medium and great water depths are also being developed and are expected to become more common in future offshore wind installations. Therefore, the new developments identified in this paper show the likelihood of an increase in the use of concrete support structures in future offshore wind farms. These developments also indicate that the complexity of future support structures will increase due to the development of hybrid structures combining steel and concrete. These evolutions call for new knowledge and technical know-how in order to allow reliable structures to be built and risk-free offshore installation to be executed.

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“…Wave load: The potential flow theory is adopted to calculate the wave hydrodynamic [5]. The fluid needs to satisfy the Laplace's equation:…”

Section: Basic Theoriesmentioning

confidence: 99%

Tendon Response of 10 MW Offshore Wind Turbine TLP Platform in Extreme Environment Condition

Zhang

Zhao

Chen

et al. 2013

AMM

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Deep-sea offshore wind resources are extremely abundant. Large offshore wind turbine is the future trend to utilize of deep-sea offshore wind resources. Because of excellent heaving, pitching and rolling performances, tension-leg platform ( TLP ) is one of best floating support structures for large wind turbine. However, under extreme environment condition, the large tendons which are required for large offshore wind turbine TLP platform will meet extreme response, even lead to damage. Extreme response of tendon of a 10 MW offshore wind turbine TLP platform ( an improved MOSES TLP ) in the extreme environment condition is studied here. It is showed that the global motions can meet the basic requirements for 10 MW floating wind turbine, where the maximum angle of TLP is less than 100. Meanwhile, the maximum tendon tension of the TLP in the simulation is less than the breaking force, which meets the requirements of API rules on tendon of TLP.

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Hydrodynamic comparison of a semi-submersible, TLP, and Spar: Numerical study in the South China Sea environment

Cited by 16 publications

References 9 publications

Numerical Study of a Proposed Semi-Submersible Floating Platform with Different Numbers of Offset Columns Based on the DeepCwind Prototype for Improving the Wave-Resistance Ability

Numerical Study of a Proposed Semi-Submersible Floating Platform with Different Numbers of Offset Columns Based on the DeepCwind Prototype for Improving the Wave-Resistance Ability

Concrete Support Structures for Offshore Wind Turbines: Current Status, Challenges, and Future Trends

Tendon Response of 10 MW Offshore Wind Turbine TLP Platform in Extreme Environment Condition

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