An Integrated Nonlinear Wind-Waves Model for Offshore Wind Turbines

• 第一著者: Marino, Enzo (auth)
• フォーマット: 電子媒体 図書の章
• 言語: 英語
• 出版事項: Firenze Firenze University Press 2011
• シリーズ: Premio Tesi di Dottorato
• 主題: Building construction & materials; Building skills & trades
• オンライン･アクセス: DOAB: download the publication; DOAB: description of the publication

要約

This thesis presents a numerical model capable of simulating offshore wind turbines exposed to extreme loading conditions. External condition-based extreme responses are reproduced by coupling a fully nonlinear wave kinematic solver with a hydro-aero-elastic simulator. First, a two-dimensional fully nonlinear wave simulator is developed. The transient nonlinear free surface problem is formulated assuming the potential theory and a high-order boundary element method is implemented to discretize Laplace's equation. For temporal evolution a second-order Taylor series expansion is used. The code, after validation with experimental data, is successfully adopted to simulate overturning plunging breakers which give rise to dangerous impact loads when they break against wind turbine substructures. Emphasis is then placed on the random nature of the waves. Indeed, through a domain decomposition technique a global simulation framework embedding the numerical wave simulator into a more general stochastic environment is developed. The proposed model is meant as a contribution to meet the more and more pressing demand for research in the offshore wind energy sector as it permits taking into account dangerous effects on the structural response so as to increase the global structural safety level.

物理的記述

1 electronic resource (230 p.)

ISBN

978-88-6655-053-2
9788866550532
9788866550518
9788892736429

アクセス

Open Access