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A comparative study for tidal current velocity prediction using simplified and fast algorithms

机译：使用简化快速算法的潮流速度预测的比较研究

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摘要

Interest in marine renewable energies has grown in recent years, especially in northern European shelf seas where several technological devices have been developed. In this context, numerous investigations focused on accurate predictions of tidal currents and their respective kinetic energy. An empirical estimation of the current velocity is explored in this study, where three different methods are presented. The first method is a linear approximation of the tidal vector velocity as a function of the tidal coefficient (ratio of the tidal range over its maximal value). The second and the third methods are a piece-wise linear and an exponential relationships between tidal vector velocity and the tidal coefficient, respectively. These three methods are compared to reference values obtained using a numerical simulation of tidal hydrodynamics. These methods are applied at two prominent tidal stream energy sites along the coast of France, the Fromveur Strait (western Brittany) and the Alderney Race (between the island of Alderney, Channel islands, and the Cap de la Hague, France). Results show that the piece-wise linear and the exponential models are more accurate than the linear approximation, where the mean error decreased by 12.7% and 14.9% respectively at the worst case scenario.
机译：近年来，对海洋可再生能源的兴趣已经发展，特别是在北欧货物海洋中，已经开发了几种技术设备。在这种情况下，许多调查专注于准确预测潮流及其各自的动能。本研究探讨了当前速度的经验估计，其中提出了三种不同的方法。第一方法是作为潮汐系数的函数的潮汐矢量速度的线性近似（潮汐范围内的潮汐范围的比率）。第二种和第三种方法是分别是潮汐矢量速度和潮汐系数之间的碎片线性和指数关系。将这三种方法与使用潮气动力学的数值模拟获得的参考值进行比较。这些方法沿着法国海岸，弗洛威尔海峡（西部布列塔尼）和奥尔德尼群岛（奥尔德尼岛屿，渠道岛屿和法国Cap de La Hague）的两个突出的潮流能源地点。结果表明，该片性线性和指数型号比线性近似更准确，在最坏情况下，平均误差分别下降12.7％和14.9％。

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  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2089-2089|共1页
  • 作者

    J. Tondut; T.E. Tawil; J. Thiebot;

  • 作者单位

    Segula Technologies Naval and Energy engineering Research & Innovation Unit Nanterre 92000 France;

    Segula Technologies Naval and Energy engineering Research & Innovation Unit Nanterre 92000 France;

    Segula Technologies Naval and Energy engineering Research & Innovation Unit Nanterre 92000 France;

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