NACA 4412 翼面上的三角窝和长宽比对 H-Darrieus 风力转子整体性能的影响：实验研究

IF 1.5 Q4 ENERGY & FUELS

Wind Engineering Pub Date : 2024-07-23 DOI:10.1177/0309524x241256955

Avulamanda Siva Nagaraju, Rajat Gupta, S. Bhowmik

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引用次数: 0

摘要

本研究通过风洞试验，探讨了在低风速（4、6 和 8 米/秒）条件下，调整高宽比（AR）和在机翼上添加三角窝如何提高 H 型达里厄斯风转子（H 型转子）的性能。结果表明，在 AR 值为 1.0 时，标准 H 型转子和三角窝翼 H 型转子的性能最佳，而在不同风速下，其他纵横比的性能会有所变化。与标准转子相比，配备三角窝的 H 型转子具有更强的自启动能力和更宽的翼尖速比 (TSR) 工作范围，从而确保了在各种风况下的可靠性。此外，在 4 米/秒的风速下，三角形凹槽转子的最大功率系数（[计算公式：见正文]）比无凹槽 H 型转子提高了近 13.6%。这项研究强调了调整 AR 和集成三角窝叶片以提高 H 型转子性能的有效性，尤其是在低风速条件下。

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Effects of the influence of triangular dimple and aspect ratio on NACA 4412 airfoil on the overall performance of H-Darrieus wind rotor: An experimental investigation

This study examines how adjusting aspect ratio (AR) and adding triangular dimples to the airfoil can enhance H-type Darrieus wind rotor (H-rotor) performance under low wind speeds (4, 6, and 8 m/s) using wind tunnel testing. Results show optimal performance at an AR of 1.0 for both standard and Triangular dimple airfoil H-rotors, with variations at different wind speeds for other aspect ratios. Triangular dimple-equipped H-rotors demonstrate improved self-starting capability and a wider operational range of tip speed ratio (TSR) compared to standard rotors, ensuring reliability across diverse wind conditions. Moreover, the triangular dimple rotor achieves a nearly 13.6% increase in maximum coefficient of power ([Formula: see text]) compared to the dimple-free H-rotor at 4 m/s wind speed. This study underscores the efficacy of adjusting AR and integrating triangular dimple blades to enhance H-rotor performance, particularly in low wind speeds.

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来源期刊

Wind Engineering ENERGY & FUELS-

CiteScore

4.00

自引率

13.30%

发文量

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.