Numerical Investigations on the Geometry of Offshore Wind Turbine Foundations

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Authors: Ahmed B. Shaath, Qazi U. Farooq, M.T. Naqash, O Harireche, and Harris Ramli
Page Range: 365-378
Published in: International Journal of Energy, Environment, and Economics, Volume 29 Issue 3
ISSN: 1054-853X

Table of Contents

ABSTRACT

Offshore wind turbines are an essential component of the renewable network. Damage to wind turbine structures is common due to geological agents, and their maintenance and retrofitting are expensive due to accessibility issues. Therefore, an appropriate and long-lasting foundation design is an essential requirement for the long-term sustainability of wind turbines. In this study, wind turbine foundation geometry has been studied for different soil and loading conditions. The FEM models for Monopile and Hybrid foundations are analyzed by using the COMSOL Multiphysics program. The strength and deformation characteristics were graphically presented, and the foundation performance was evaluated. The maximum total displacement under similar circumstances for Monopile cases was 5.71 mm while, it was 27.92 mm for Hybrid foundations. Based on the study results, the monopile foundation system was reported to be more efficient in terms of settlement control. The research outcome will help design engineers and construction staff to select appropriate foundation types as per field requirements.

Keywords: offshore turbines, Sandy seabed, pile foundations, deformations, FEM analysis

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