STUDY ON WAVE LOAD CHARACTERISTICS OF LARGER DIAMETER MONOPILE FOUNDATION FOR OFFSHORE WIND POWER

He Ben; Song Mengxia; Wei Maoxing; Li Wei; He Fang

doi:10.19912/j.0254-0096.tynxb.2023-1318

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (12) : 324-330. DOI: 10.19912/j.0254-0096.tynxb.2023-1318

STUDY ON WAVE LOAD CHARACTERISTICS OF LARGER DIAMETER MONOPILE FOUNDATION FOR OFFSHORE WIND POWER

He Ben¹, Song Mengxia², Wei Maoxing², Li Wei¹, He Fang²

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Abstract

The Morison equation is a widely used formula for calculating wave loads on offshore wind turbine monopile foundations. However, as monopile diameters increase, diffraction effects can no longer be ignored, and the Morison equation method becomes less accurate. This study investigates the horizontal wave load on large-diameter monopile foundations with a pile-diameter to wavelength ratio ranging from 0.15 to 0.25. To this end, a combination of physical model experiments and computational fluid dynamics （CFD） numerical simulations was employed. The variation of the maximum horizontal wave load was analyzed for monopiles of different diameters under different wave conditions. A curve depicting the values of the inertia force coefficient was given, and an empirical formula based on the Morison equation was proposed for calculating the maximum horizontal wave load on large-diameter monopile foundations.

Key words

offshore wind turbines / pile foundations / curve fitting / Morison equation / wave load

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He Ben, Song Mengxia, Wei Maoxing, Li Wei, He Fang. STUDY ON WAVE LOAD CHARACTERISTICS OF LARGER DIAMETER MONOPILE FOUNDATION FOR OFFSHORE WIND POWER[J]. Acta Energiae Solaris Sinica. 2024, 45(12): 324-330 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1318

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