Comparison of simplified model and FEM model in coupled analysis of floating wind turbine

IF 0.7 Q4 ENGINEERING, OCEAN

Ocean Systems Engineering-An International Journal Pub Date : 2015-09-25 DOI:10.12989/OSE.2015.5.3.221

B. Kim, S. Hong, H. Sung, Seok-Won Hong

引用次数: 3

Abstract

Abstract. This paper compares simplified and finite element method (FEM) models for tower and blade in dynamic coupled analysis of floating wind turbine. A SPAR type wind turbine with catenary mooring lines is considered in numerical analysis. Floating body equation is derived using boundary element method (BEM) and convolution. Equations for mooring line, tower and blade are formulated with theories of catenary, elastic beam and aerodynamic rotating beam, respectively and FEM is applied in the formulation. By combining the equations, coupled solutions are calculated. Tower or blade may be assumed rigid or lumped body for simplicity in modeling. By comparing floating body motions, mooring line tensions and tower stresses with the simple model and original FEM model, the effect of including or neglecting elastic, rotating and aerodynamic behavior of tower and blade is discussed.

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浮式风力机耦合分析中简化模型与有限元模型的比较

摘要本文比较了浮式风力机塔架和叶片动力耦合分析的简化模型和有限元模型。对具有悬链线系缆的SPAR型风力机进行了数值分析。采用边界元法和卷积法推导了浮体方程。分别用悬链线理论、弹性梁理论和气动旋转梁理论建立了系缆、塔和桨的方程，并采用有限元方法进行了计算。通过组合方程，计算出耦合解。为简化建模，可假定塔或叶片为刚体或集总体。通过将浮体运动、系泊线张力和塔架应力与简单模型和原始有限元模型进行比较，讨论了考虑或忽略塔架和叶片的弹性、旋转和气动特性的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ocean Systems Engineering-An International Journal ENGINEERING, OCEAN-

自引率

22.20%

发文量

期刊介绍： The OCEAN SYSTEMS ENGINEERING focuses on the new research and development efforts to advance the understanding of sciences and technologies in ocean systems engineering. The main subject of the journal is the multi-disciplinary engineering of ocean systems. Areas covered by the journal include; * Undersea technologies: AUVs, submersible robot, manned/unmanned submersibles, remotely operated underwater vehicle, sensors, instrumentation, measurement, and ocean observing systems; * Ocean systems technologies: ocean structures and structural systems, design and production, ocean process and plant, fatigue, fracture, reliability and risk analysis, dynamics of ocean structure system, probabilistic dynamics analysis, fluid-structure interaction, ship motion and mooring system, and port engineering; * Ocean hydrodynamics and ocean renewable energy, wave mechanics, buoyancy and stability, sloshing, slamming, and seakeeping; * Multi-physics based engineering analysis, design and testing: underwater explosions and their effects on ocean vehicle systems, equipments, and surface ships, survivability and vulnerability, shock, impact and vibration; * Modeling and simulations; * Underwater acoustics technologies.