This article reviews the aerodynamic measurement programs on wind turbines that have been performed in the last decades. It is largely based on results from four projects carried out under auspices of the International Energy Agency (IEA), which are denoted as IEA Tasks 14, 18, 20, and 29. The aim of these projects was to collect and analyze aerodynamic measurements on five field facilities (IEA Tasks 14 and 18), the National Renewable Energy Laboratory Phase VI turbine placed in the large NASA Ames wind tunnel (IEA Task 20), and the Mexico turbine placed in the Large Low Speed Facility of the German Dutch Wind tunnel DNW (IEA Task 29). Other experimental programs with an important aerodynamic content are touched upon as well. Research areas for which these measurements have led to important progress are identified. The progress is illustrated with analyses on these experiments. It is shown that detailed aerodynamic measurements are an absolute necessity for the validation and improvement of wind turbine design codes, where it is also concluded that the amount of measurement data which has been produced until now is still far too limited.

中文翻译：

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风力涡轮机的空气动力学测量

本文回顾了近几十年来在风力涡轮机上执行的空气动力学测量程序。它主要基于国际能源署（IEA）主持下进行的四个项目的结果，这些项目被称为IEA任务14、18、20和29。这些项目的目的是收集和分析空气动力学测量值。五个现场设施（IEA任务14和18），国家可再生能源实验室第六阶段涡轮机放置在大型NASA Ames风洞中（IEA任务20），以及墨西哥涡轮机放置在德国荷兰风洞的大型低速设施中DNW（IEA任务29）。还涉及了其他具有重要的空气动力学内容的实验程序。确定了这些测量已导致重要进展的研究领域。通过对这些实验的分析说明了这一进展。结果表明，详细的空气动力学测量对于验证和改进风力涡轮机设计规范是绝对必要的，在此还得出结论，迄今为止产生的测量数据数量仍然非常有限。