Investigation of the performance of a staggered configuration of tidal turbines using CFD
Investigation of the performance of a staggered configuration of tidal turbines using CFD
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DOI：
10.1016/j.renene.2015.03.001
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发表时间：
2015-08
期刊：
影响因子：
8.7
通讯作者：
M. Gebreslassie;G. Tabor;M. Belmont
中科院分区：
文献类型：
--
作者：
M. Gebreslassie;G. Tabor;M. Belmont
本文采用基于CFD的浸没体积力涡轮机建模方法，研究了尾流相互作用和阻塞对潮汐流场交错配置中单个涡轮机性能的影响。每个涡轮机的入流条件事先是未知的，这使得难以将正确的载荷施加到各个装置。在这种情况下，有必要通过改变载荷或体积力来建立适当的工作点范围，以便了解尾流相互作用和阻塞对单个设备性能的影响。下游涡轮机的性能受到上游涡轮机尾流相互作用的严重影响，但发电场内存在加速区域，可能用于增加发电场的总功率提取。横向紧密填充的涡轮机可以由于阻塞效应而改善这些涡轮机的性能，但这也可能影响下游涡轮机的性能。因此，平衡阻塞和尾流相互作用的影响仍然是优化潮汐流农场中设备性能的巨大挑战。
This paper investigates the influence of wake interaction and blockage on the performance of individual turbines in a staggered configuration in a tidal stream farm using the CFD based Immersed Body Force turbine modelling method. The inflow condition to each turbine is unknown in advance making it difficult to apply the correct loading to individual devices. In such cases, it is necessary to establish an appropriate range of operating points by varying the loading or body forces in order to understand the influence of wake interaction and blockage on the performance of the individual devices. The performance of the downstream turbines was heavily affected by the wake interaction from the upstream turbines, though there were accelerated regions within the farm which could be potentially used to increase the overall power extraction from the farm. Laterally closely packed turbines can improve the performance of those turbines due to the blockage effect, but this could also affect the performance of downstream turbines. Thus balancing both the effect of blockage and wake interaction continues to be a huge challenge for optimising the performance of devices in a tidal stream farm.