Tribological challenges of scaling up tidal turbine blades
Tribological challenges of scaling up tidal turbine blades
复制标题
扩大潮汐涡轮机叶片的摩擦学挑战
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
M. Stack
中科院分区：
文献类型：
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作者：
S. Sharifi;C. Johnstone;M. Stack
从可再生资源（风能、波浪能和潮汐能）发电越来越受到关注。相比之下，在所有海洋可再生能源中，潮汐能在长时间尺度上具有更高的持久性和可预测性，并且水的密度高于空气，这导致潮汐涡轮机的功率输出大于具有类似尺寸的风力涡轮机。然而，由于潮汐的性质，开发用于这种环境的可靠装置，特别是具有增加的转子直径的可靠装置，提出了更多的挑战，包括摩擦学挑战，例如沉积物侵蚀、气蚀侵蚀及其对潮汐涡轮机叶片的可能的协同效应。这项研究的重点是测试和开发在潮汐环境中改善摩擦学性能的材料。这包括生产具有不同纤维和增强布局的各种复合材料，以评估潮汐环境中复合材料的两个主要摩擦学问题：使用loped试验台的基体切割和增强断裂，该试验台测量不同尖端速度下的冲击角度，粒度和浓度的影响。使用扫描电子显微镜（SEM）分析测试样品，以进行表面形貌和表征。
Generating electricity from renewable resources (wind, wave and tidal) is of increasing interest. Of all marine renewables, tidal energy, by comparison, possesses the higher persistency and predictability over long time scales and the higher density of water than air results in greater power output from a tidal turbine than a wind turbine with similar dimensions. However, due to the nature of the tides, developing a reliable device for such environments, especially with an increased rotor diameter, raises more challenges to be addressed including the tribological challenges such as sediment erosion, cavitation erosion and their possible synergistic effects on the tidal turbine blades. This research focuses on testing and developing materials for improved tribological performance in tidal environments. This includes producing a variety of composite materials with different fibres and layouts reinforcement to evaluate two main tribological issues of composite materials in tidal environments: matrix cutting and reinforcement fracture using a loped test rig, which measures the effects of impact angle, particle size and concentrations at different tip speeds. The test samples are analysed using scanning electron microscopy (SEM) to conduct a surface topography and characterisation.