BEM theory: How to take into account the radial flow inside of a 1-D numerical code
BEM theory: How to take into account the radial flow inside of a 1-D numerical code
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DOI：
10.1016/j.renene.2011.08.008
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发表时间：
2012-03
期刊：
影响因子：
8.7
通讯作者：
R. Lanzafame;M. Messina
中科院分区：
文献类型：
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作者：
R. Lanzafame;M. Messina
基于叶片单元动量（BEM）理论的数值代码，在科学和工业领域，用于设计风力涡轮机和评估其性能。使用边界元理论，可以创建一维数学代码。它们具有非常短的处理时间和高可靠性。然而，这与这些数学模型特有的一些问题的解决有关。这些数值代码的问题在科学文献中是众所周知的：不可能在一维代码中描述沿叶片沿着的三维径向流;可能出现数值不稳定性，从而阻止代码收敛于正确的解。在这项工作中，作者将展示如何数学描述升力系数，以消除缺乏描述离心泵。最后，为了确定数值结果的准确性，这些将被从科学文献中提取的实验数据进行比较。特别是，模拟数值代码数据将与NREL Phase II和NREL Phase VI风力涡轮机的功率和效率曲线的实验数据进行比较。
Blade Element Momentum (BEM) theory based numerical codes are employed, both in the scientific and industrial field, for designing wind turbines and appraising their performance. Using BEM theory, mono-dimensional mathematical codes can be created. They have very short processing times and high reliability. However, this is related to the solution of a few problems peculiar to these mathematical models. The problems of these numerical codes are well known in scientific literature: the impossibility of describing inside the mono-dimensional code the three-dimensional radial flow along the blades; the possibility of running into numerical instabilities which prevent the code from converging on the correct solution. In this work the author will show how to mathematically describe lift coefficients so as to eliminate the lack of description for centrifugal pumping. Finally, to ascertain the accuracy of numerical results, these will be compared to experimental data taken from scientific literature. In particular, simulated numerical code data will be compared with the experimental data for the power and efficiency curves of NREL Phase II and NREL Phase VI wind turbines.