Aerodynamic interaction of diffuser augmented wind turbines in multi-rotor systems
Aerodynamic interaction of diffuser augmented wind turbines in multi-rotor systems
复制标题
多旋翼系统中扩散器增强型风力涡轮机的气动相互作用
DOI：
10.1016/j.renene.2017.05.014
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发表时间：
2017
期刊：
影响因子：
8.7
通讯作者：
P. Jamieson
中科院分区：
文献类型：
--
作者：
U. Göltenbott;Y. Ohya;S. Yoshida;P. Jamieson
最常见的风力涡轮机是单转子水平轴风力涡轮机。为了降低能源成本，单转子风力发电机的大型化已成为主要趋势。然而，最近的研究表明，对于给定的技术，升级时成本通常会上升，特别是由于质量的增加。为了达到超过 10 MW 的容量，多转子系统 (MRS) 比单转子系统 (SRS) 具有明显的优势。另一方面，扩压器增强型风力涡轮机 (DAWT) 可以显着提高涡轮机的性能。在本研究中，在 MRS 中引入了带边 DAWT。在风洞实验中，对两个和三个 DAWT 的空气动力学进行了分析，这些 DAWT 紧密排列在垂直于均匀流的同一平面上。与单转子涡轮机相比，两转子和三转子配置的功率分别提高了 5% 和 9%。用于测量 MRS 中 DAWT 之间间隙附近流速的热线技术显示出流速的加速。回顾钝体流动现象，以在 SRS 中观察到的流动动力学为基础，分析 MRS 中流动的物理动力学。
The most common wind turbine is the single–rotor, horizontal axis wind turbine. In order to reduce the cost of energy, upscaling of single–rotor wind turbines has been a major trend. Recent studies however show that for a given technology, the cost usually rises when upscaling, notably due to increased masses. To reach capacities beyond 10 MW, multi–rotor systems (MRS) have promising advantages over single–rotor systems (SRS). On the other hand, diffuser augmented wind turbines (DAWTs) can significantly increase the performance of the turbine. In this research, brimmed DAWTs are introduced in a MRS. In wind tunnel experiments, the aerodynamics of two and three DAWTs, spaced in close vicinity in the same plane normal to a uniform flow, have been analyzed. Power increases of up to 5% and 9% for the two and three rotor configurations are respectively achieved in comparison to a single–rotor turbine. Hot–wire techniques used to measure the flow speed near the gap between the DAWTs in a MRS have shown an acceleration of the flow. Phenomena of bluff body flows are reviewed to analyze the physical dynamics of the flows in the MRS on the basis of the flow dynamics observed in a SRS.
DOI：
10.1016/j.jweia.2005.09.003
发表时间：
2005-12-01
影响因子：
4.8
作者：
Abe, K;Nishida, M;Sato, K
通讯作者：
Sato, K