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Hydrokinetic turbine array analysis and optimization integrating blockage effects and turbine-wake interactions
Renewable Energy ( IF 8.7 ) Pub Date : 2021-09-18 , DOI: 10.1016/j.renene.2021.09.003
Olivier Gauvin-Tremblay 1 , Guy Dumas 1
Affiliation  

In order to maximize the energy extraction of a hydrokinetic turbine array deployment, turbines must be positioned judiciously within the array. In fact, it is possible to optimize the array configuration in order to benefit from blockage effects and to avoid negative turbine-wake interactions. The Effective Performance Turbine Model (EPTM) that has recently been proposed is a suitable tool for this purpose, allowing to test and analyze a large number of different configurations at a practical computational cost. In this work, assuming a turbulent flow environment, many vertical-axis turbine array configurations (VAT arrays) are tested to study the effect of local blockage, lateral and longitudinal spacing, array staggering and direction of rotation on turbine performance. It is found that the wake deflection associated to the specific turbine tested and the lateral force it induces has a great impact on the array optimization. Following this, results show that there is no advantage to stagger VATs and that aligned configurations should be preferred. In this context, turbines should rotate inward (looking downstream) with respect to the central plane of the array. Some guidelines are also provided in terms of lateral and longitudinal spacings, with the support of a novel parameter indicating the marginal power provided by the addition of a row of turbines.



中文翻译:

结合阻塞效应和涡轮-尾流相互作用的流体动力涡轮阵列分析和优化

为了最大限度地提取水力涡轮机阵列部署的能量,涡轮机必须明智地放置在阵列内。事实上,可以优化阵列配置以受益于阻塞效应并避免负面的涡轮机尾流相互作用。最近提出的有效性能涡轮模型 (EPTM) 是用于此目的的合适工具,允许以实际计算成本测试和分析大量不同的配置。在这项工作中,假设存在湍流环境,测试了许多垂直轴涡轮阵列配置(VAT 阵列),以研究局部堵塞、横向和纵向间距、阵列交错和旋转方向对涡轮性能的影响。发现与测试的特定涡轮机相关的尾流偏转及其引起的侧向力对阵列优化有很大影响。在此之后,结果表明错开增值税没有优势,应该首选对齐的配置。在这种情况下,涡轮机应该相对于阵列的中心平面向内旋转(向下游看)。还提供了一些关于横向和纵向间距的指南,并支持一个新参数,该参数表明添加一排涡轮机提供的边际功率。涡轮机应该相对于阵列的中心平面向内旋转(向下游看)。还提供了一些关于横向和纵向间距的指南,并支持一个新参数,该参数表明添加一排涡轮机提供的边际功率。涡轮机应该相对于阵列的中心平面向内旋转(向下游看)。还提供了一些关于横向和纵向间距的指南,并支持一个新参数,该参数表明添加一排涡轮机提供的边际功率。

更新日期:2021-09-30
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