Modeling Vertical-Axis Wind-Turbine Performance: Blade-Element Method Versus Finite Volume Approach
Modeling Vertical-Axis Wind-Turbine Performance: Blade-Element Method Versus Finite Volume Approach
复制标题
垂直轴风力发电机性能建模：叶片单元法与有限体积法
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
D. Rempfer
中科院分区：
文献类型：
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作者：
P. Kozak;David Vallverdú;D. Rempfer
垂直轴风力涡轮机提供了比水平轴机器更简单的设计，并且其较低的叶片速度减轻了安全和噪音问题。虽然垂直轴涡轮机确实提供了显着的操作优势，发展一直受到阻碍的空气动力学建模的困难，沿着他们的旋转几何。本文介绍了一个基线垂直轴风力涡轮机使用Star-CCM+，一个商业有限体积代码计算的模拟结果，并将它们与多流管模型获得的数据进行比较。重点放在动态失速特性和尾迹产生，这对涡轮机性能的影响最大。开发了一个模型来复制在较高叶尖速比下常见的叶片-尾流相互作用，并发现该模型大大提高了叶素动量模型的准确性。
Vertical-axis wind turbines offer an inherently simpler design than horizontal-axis machines, and their lower blade speed mitigates safety and noise concerns. Although vertical-axis turbines do offer significant operational advantages, development has been hampered by the difficulty of modeling the aerodynamics involved, along with their rotating geometry. This paper presents results from a simulation of a baseline vertical-axis wind turbine computed using Star-CCM+, a commercial finite volume code, and compares them with data obtained from a multiple-streamtube model. Emphasis was placed on the dynamic stall characteristics and wake production, which have the greatest influence on turbine performance. A model was developed to replicate the blade–wake interactions common at higher tip-speed ratios and was found to greatly improve the accuracy of the blade-element momentum model.