Structural design of a floating foundation for offshore wind turbines in red sea

Hussein, Karim; Hussein, Aiya N.; Hegazy, El-Sayed; Amin, Abdulqadir

doi:10.1201/b15120-78

Cited by 5 publications

(2 citation statements)

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“…The results show that the design meets the corresponding specification requirements under the action of extreme loads. Based on the structural type of Windfloat floating wind turbines and considering the average conditions of the 100-year return period in the Red Sea, Hussein et al [2] established a finite element model to analyze the overall strength of the foundation under different ballast, operating, and extreme conditions. The study showed that the columns supporting the wind turbine had higher stress levels than those of other columns.…”

Section: Introductionmentioning

confidence: 99%

Overall Strength Analysis of Floating Offshore Wind Turbine Foundation

Jiang

Wu²,

Peng

2023

J. Phys.: Conf. Ser.

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The loads on the floating offshore wind turbine foundation are complex, and the evaluation of its overall structural strength is particularly important. This paper establishes a new type of semi-submersible floating wind power infrastructure finite element model based on the three-dimensional potential flow theory. The long-term forecast design wave method is used to carry out a long-term forecast of the wave load under the control parameters of the characteristic sections, with the wind pressure load superimposed and combined. Finally, the overall strength of the floating foundation under self-existing conditions is analyzed. The research shows that the max Von-Mises stress of the mid-transverse section is 115.6% higher than that of the mid-longitudinal section in the most dangerous state, and the overall strength of the structure meets the requirements of the standard. The high-stress areas appear at the connection between the lower floating body, including the cross brace and the column, while the max stress appears at the connection between the cross brace and the column supporting the wind turbine. Attention should be paid to such key parts in the detailed design stage of the floating foundation. The numerical analysis method and research conclusions can also provide a reference for the analysis and optimization of the same type of floating foundation.

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Section: Introductionmentioning

confidence: 99%

Overall Strength Analysis of Floating Offshore Wind Turbine Foundation

Jiang

Wu²,

Peng

2023

J. Phys.: Conf. Ser.

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“…Compared to earlier years, offshore wind power generation has become economically more viable thanks to decreasing capital, engineering, installation, and maintenance costs [7,9]. A computer program has been developed to calculate the scantlings of the floating foundation; following DNV rules, a computer program was developed, and 3D Finite Element Analysis was conducted to check the adequacy of the estimated scantlings in the Red Sea [10]. The other drivers for investors and developers are government incentives, subsidies, and favorable policies towards the growth of offshore wind generation.…”

Section: Introductionmentioning

confidence: 99%

Offshore Wind Power Resource Assessment in the Gulf of North Suez

Rehman,

Irshad,

Ibrahim

et al. 2023

Sustainability

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Growing population, industrialization, and power requirements are adversely affecting the environment through increased greenhouse gases resulting from fossil fuel burning. Global greenhouse gas mitigation targets have led nations to promote clean and self-renewable sources of energy to address this environmental issue. Offshore wind power resources are relatively more attractive due to high winds, less turbulence, minimal visualization effects, and no interaction of infrastructure. The present study aims at conducting an offshore wind power resource assessment (OWPRA) at some locations in the Gulf of North Suez. For this purpose, the long-term hourly mean wind speed (WS) and wind direction above mean sea level (AMSL), as well as temperature and pressure data near the surface, are used. The data is obtained from ERA5 (fifth generation global climate reanalysis) at six (L1–L6) chosen offshore locations. The data covers a period of 43 years, between 1979 and 2021. The WS and direction are provided at 100 m AMSL, while temperature and pressure are available near water-surface level. At the L1 to L6 locations, the log-term mean WS and wind power density (WPD) values are found to be 7.55 m/s and 370 W/m2, 6.37 m/s and 225 W/m2, 6.91 m/s and 281 W/m2, 5.48 m/s and 142 W/m2, 4.30 m/s and 77 W/m2, and 5.03 and 115 W/m2 and at 100 m AMSL, respectively. The higher magnitudes of monthly and annual windy site identifier indices (MWSI and AWSI) of 18.68 and 57.41 and 12.70 and 42.94 at the L1 and L3 sites, and generally lower values of wind variability indices, are indicative of a favorable winds source, which is also supported by higher magnitudes of mean WS, WPD, annual energy yields, plant capacity factors, and wind duration at these sites. The cost of energy for the worst and the best cases are estimated as 10.120 USD/kWh and 1.274 USD/kWh at the L5 and L1 sites, corresponding to wind turbines WT1 and WT4. Based on this analysis, sites L1, L3, and L2 are recommended for wind farm development in order of preference. The wind variability and windy site identifier indices introduced will help decision-makers in targeting potential windy sites with more confidence.

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