双级同轴垂直轴风力涡轮机的空气动力学研究

IF 1.5 Q4 ENERGY & FUELS Wind Engineering Pub Date : 2023-12-09 DOI:10.1177/0309524x231212638
Muhammad Saif Ullah Khalid, Priscila Scarlet Portocarrero Mendoza, D. Wood, A. Hemmati
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引用次数: 0

摘要

本研究探索了一种基于鱼类自然游泳习惯的生物灵感的新型多级同轴垂直轴风力涡轮机的空气动力学。该涡轮由传统的直叶垂直轴涡轮(VAWT)与一个额外的小内转子组成,也是三个叶片。内转子的方位和径向位置发生了变化。通过数值模拟,在一定的叶尖速比范围内对新设计的性能进行了评估。初步结果表明,在叶尖速比下,多级vawt的功率输出增加了600%,而在叶尖速比下,功率系数则大幅下降。尾迹动力学分析表明,增加是由于一个转子叶片和另一个转子叶片之间的相互作用。这减少了与产生大部分功率的外转子的非定常分离。详细的参数研究也完成了,这表明几何和运动学细节对所提出的多级VAWT性能的影响。
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On the aerodynamics of dual-stage co-axial vertical-axis wind turbines
This study explored the aerodynamics of a new multi-stage co-axial vertical-axis wind turbine based on bio-inspiration from natural swimming habit of fish. The turbine was formed from a conventional straight-bladed vertical axis turbine (VAWT) with an additional small inner rotor, also of three blades. The azimuthal and radial locations of the inner rotor were varied. Using numerical simulations, performance of the proposed new design was evaluated over a range of tip-speed ratios. The preliminary results identified a 600% increase in power output for multi-stage VAWTs at tip-speed ratios [Formula: see text], and a substantial drop in power coefficient at [Formula: see text]. The wake dynamics analyses revealed that the increase was due to interactions between the blades of one rotor and the other. This reduced the unsteady separation from the outer rotor, which produced most of the power. A detailed parametric study was also completed, which showed the implications of geometric and kinematic details on the performance of the proposed multistage VAWT.
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来源期刊
Wind Engineering
Wind Engineering ENERGY & FUELS-
CiteScore
4.00
自引率
13.30%
发文量
81
期刊介绍: Having been in continuous publication since 1977, Wind Engineering is the oldest and most authoritative English language journal devoted entirely to the technology of wind energy. Under the direction of a distinguished editor and editorial board, Wind Engineering appears bimonthly with fully refereed contributions from active figures in the field, book notices, and summaries of the more interesting papers from other sources. Papers are published in Wind Engineering on: the aerodynamics of rotors and blades; machine subsystems and components; design; test programmes; power generation and transmission; measuring and recording techniques; installations and applications; and economic, environmental and legal aspects.
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