Towing tank testing of passively adaptive composite tidal turbine blades and comparison to design tool
Towing tank testing of passively adaptive composite tidal turbine blades and comparison to design tool
复制标题
被动自适应复合材料潮汐涡轮机叶片拖曳水池测试及与设计工具的比较
DOI：
10.1016/j.renene.2017.09.062
复制
发表时间：
2018
期刊：
影响因子：
8.7
通讯作者：
C. Johnstone
中科院分区：
文献类型：
--
作者：
Robynne E. Murray;S. Sanchez;Kate Porter;D. Doman;M. Pegg;C. Johnstone
由非均质复合材料制成的被动自适应弯曲扭转（BT）潮汐涡轮机叶片有可能减少涡轮机上的结构载荷，从而可以使用更小、更具成本效益的部件。使用 BT 叶片还可以缓和对涡轮发电机高于设计条件的要求。本文介绍了带有复合材料 BT 叶片的 828 毫米直径涡轮机与带有几何等效刚性铝叶片的涡轮机的拖曳水箱实验测试结果。 BT 叶片由石墨-环氧单向复合材料和环氧泡沫芯材构成，层角为 26.8°，可诱导 BT 耦合。在稳定流动条件下，与刚性叶片相比，BT 叶片的推力载荷降低了 11%，且载荷降低量随流速和转速而变化。开发了耦合有限元模型-叶片元动量理论设计工具，以迭代这些自适应复合材料叶片的结构（变形和应力）和流体动力（功率和推力载荷）响应。与实验测试结果相比，对于大于 2.5 的叶尖速比，设计工具的预测与实验结果的误差至少在 8% 以内。
Passively adaptive bend-twist (BT) tidal turbine blades made of non-homogeneous composite materials have the potential to reduce the structural loads on turbines so that smaller more cost effective components can be used. Using BT blades can also moderate the demands on the turbine generator above design conditions. This paper presents experimental towing tank test results for an 828 mm diameter turbine with composite BT blades compared to a turbine with geometrically equivalent rigid aluminum blades. The BT blades were constructed of a graphite-epoxy unidirectional composite material with ply angles of 26.8° to induce BT coupling, and an epoxy foam core. For steady flow conditions the BT blades were found to have up to 11% lower thrust loads compared to rigid blades, with the load reductions varying as a function of flow speed and rotational speed. A coupled finite element model-blade element momentum theory design tool was developed to iterate between the structural (deformation and stresses) and hydrodynamic (power and thrust loads) responses of these adaptive composite blades. When compared to the experimental test results, the design tool predictions were within at least 8% of the experimental results for tip-speed ratios greater than 2.5.
影响因子：
5
作者：
I. Milne;A. Day;Rajnish N. Sharma;R. Flay
通讯作者：
I. Milne;A. Day;Rajnish N. Sharma;R. Flay
影响因子：
8.7
作者：
J. Chapman;I. Masters;M. Togneri;J. A. Orme
通讯作者：
J. Chapman;I. Masters;M. Togneri;J. A. Orme
潮汐涡轮机上的叶片负载可实现均匀的非定常流动
影响因子：
8.7
作者：
Milne I
通讯作者：
Milne I