The prediction of the hydrodynamic performance of marine current turbines
The prediction of the hydrodynamic performance of marine current turbines
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DOI：
10.1016/j.renene.2007.05.043
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发表时间：
2008-05
期刊：
影响因子：
8.7
通讯作者：
W. Batten;A. Bahaj;A. Molland;J. Chaplin
中科院分区：
文献类型：
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作者：
W. Batten;A. Bahaj;A. Molland;J. Chaplin
提出了一种用于海流水轮机水动力设计的叶片单元动量模型。该模型包括2D截面数据内插和失速延迟外推的例程。将该数值模型与在空化风洞中进行的直径800 mm模型转子的试验数据进行了比较。理论预测与实验结果吻合较好。利用该模型，以一个典型的三维转子为例，演示了设计参数的变化。对于该转子，评估了叶尖浸没对可能出现的空化的影响。然后，该模型被用于求解潮汐剖面的动力效应。给出了叶片粗糙度增加的影响，表明功率的降低相对较小。这项工作表明，所开发的数值模型可以为海流水轮机的水动力设计和运行研究提供有用的工具。
The development of a blade element momentum (BEM) model for the hydrodynamic design of marine current turbines is presented. The model includes routines for interpolation of 2D section data and extrapolation for stall delay. The numerical model is compared with experimental data obtained from tests of an 800mm diameter model rotor carried out in a cavitation tunnel. The theoretical predictions are in good agreement with the experiments. Using this validated model, a typical 3D rotor is used to demonstrate parametric variations of the design parameters. The effect of tip immersion on possible cavitation is assessed for this rotor. The model is then used to solve the dynamic effects of a tidal profile. The effect of an increase in blade roughness is presented, indicating a relatively small reduction in power. This work demonstrates that the numerical model developed can provide a useful tool for the investigation of the hydrodynamic design and operation of marine current turbines.