Establishing a fully coupled CFD analysis tool for floating offshore wind turbines
Establishing a fully coupled CFD analysis tool for floating offshore wind turbines
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DOI：
10.1016/j.renene.2017.04.052
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发表时间：
2017-11
期刊：
影响因子：
8.7
通讯作者：
Yuanchuan Liu;Q. Xiao;A. Incecik;C. Peyrard;D. Wan
中科院分区：
文献类型：
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作者：
Yuanchuan Liu;Q. Xiao;A. Incecik;C. Peyrard;D. Wan
准确研究浮动式海上风力涡轮机（FOWT）系统需要了解风力涡轮机空气动力学、浮动平台流体动力学和系泊缆动力学以及这些学科领域之间的相互作用。计算流体动力学（CFD）提供了一种新的手段，分析一个完全耦合的流体-结构相互作用（FSI）系统的详细方式。在本文中，一个数值工具的基础上，开放源码的CFD工具箱OpenFOAM的应用FOWTs将被描述。各种基准的情况下，首先建模，以证明该工具的能力。然后，在不同的操作条件下，OC 4 DeepCWind半潜式FOWT模型进行了研究。使用该工具，检查浮动平台的动态运动对风力涡轮机空气动力学性能的影响，以及风力涡轮机空气动力学对浮动平台的行为和对系泊系统响应的影响。本研究结果提供了三维流固耦合的定量信息，可作为相关实验研究的补充。此外，CFD建模使得能够详细定量分析风涡轮机流场、沿着叶片的压力分布及其对风涡轮机空气动力学和浮式结构的流体动力学的影响，这在实验上是难以实现的。
An accurate study of a floating offshore wind turbine (FOWT) system requires interdisciplinary knowledge about wind turbine aerodynamics, floating platform hydrodynamics and mooring line dynamics, as well as interaction between these discipline areas. Computational Fluid Dynamics (CFD) provides a new means of analysing a fully coupled fluid-structure interaction (FSI) system in a detailed manner. In this paper, a numerical tool based on the open source CFD toolbox OpenFOAM for application to FOWTs will be described. Various benchmark cases are first modelled to demonstrate the capability of the tool. The OC4 DeepCWind semi-submersible FOWT model is then investigated under different operating conditions.With this tool, the effects of the dynamic motions of the floating platform on the wind turbine aerodynamic performance and the impact of the wind turbine aerodynamics on the behaviour of the floating platform and on the mooring system responses are examined. The present results provide quantitative information of three-dimensional FSI that may complement related experimental studies. In addition, CFD modelling enables the detailed quantitative analysis of the wind turbine flow field, the pressure distribution along blades and their effects on the wind turbine aerodynamics and the hydrodynamics of the floating structure, which is difficult to carry out experimentally.