通过一种新的平坦架门设计,提高Darrieus VAWTs的启动和扭矩
Wallaaldin Eltayeb1, Jarupula Somlal2, Mustafa SirElkhatim3
1Department of Electrical and Electronics Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur, Andhra Pradesh, 522502, India. walla129@gmail.com.
Scientific reports
|February 3, 2026
概括
平板 (PF) 和平板轮椅 (PGF) 的修改显著提高了垂直轴风力轮机 (VAWT) 的性能. 在低风条件下,PF叶片提高了轴转速高达51%,提高了效率和自启动扭矩.
科学领域:
- 空气动力学 航空动力学
- 可再生能源系统可再生能源系统
- 流体力学 流体力学 流体力学
背景情况:
- 达里乌斯型垂直轴风力轮机 (VAWT) 需要提高空气动力效率和自启动扭矩,以有效发电,特别是在低和间歇性风的条件下.
- 探索NACA 0015飞翼修改以解决VAWT性能限制.
研究的目的:
- 系统地评估用于VAWT应用的NACA 0015飞翼上的Plain Flap (PF),Gurney Flap (GF) 和混合Plain Gurney Flap (PGF) 修改的空气动力学性能.
- 在各种操作条件下确定最佳的板配置,以提高效率和自动启动扭矩.
主要方法:
- 使用SST k-ω流模型进行了二维不稳定的雷诺兹-平均纳维埃-斯托克斯 (URANS) 模拟.
- 模拟涵盖了0.2-4.5的倾斜速度比 (TSR) 范围和5.4×104到2.7×105.5的雷诺斯数.
- 数值结果通过原型测试得到验证.
主要成果:
- 最佳的0.5c,10° PF配置在整个操作范围显示出强大的性能,通过增加有效的曲率,在低TSR (0.2-0.5) 时显著改善了平均Cm (30-40%) 和Cp (40%).
- 在中度TSR (0.8-1.5) 时,PF和PGF都实现了显著的Cp增长 (40-50%).
- PF保持了超越TSR=2.0的优越空气动力学稳定性和效率,而PGF的性能由于阻力处罚而下降. 原型测试证实PF刀片增加了轴速率高达51%.
结论:
- PF和PGF的修改有效地减轻了VAWT的弱自动启动和低效率问题.
- 平面 (PF) 修改提供了一种经过验证的被动设计途径,用于增强小型和混合太阳能风能系统.
- 在各种风条件下最大限度地提高VAWT性能,最优的板设计至关重要.
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