在大型风力轮机系统中对叶片飞抑制生物模拟波纹的研究
Lijun Zhang1, Kaifei Wang1, Xu Zhang1
1College of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao, Shandong, People's Republic of China.
Bioinspiration & biomimetics
|May 9, 2024
概括
研究人员开发了一种生物模拟波纹方法,灵感来自龙的翅膀,以抑制大型风力轮机的叶片飞. 这种新的方法提高了空气动力学性能和结构度,大大提高了轮机的安全性和效率.
科学领域:
- 空气动力学 航空动力学
- 生物模拟学是一种生物模拟学.
- 风力轮机工程 风力轮机工程
背景情况:
- 叶片动对大型水平轴风力轮机的运行安全和效率构成重大风险.
- 现有的抑制飞的方法通常涉及复杂的结构修改或主动控制系统.
- 灵感来自大自然的设计,如蝶翼波纹,为被动空气动力学增强提供了潜力.
研究的目的:
- 提出和研究一种新的方法来抑制大型风力轮机的叶片动,使用仿生波纹.
- 为了分析波纹气体的空气动力学性能和的抑制效果.
- 为了验证这种仿生结构在15MW风力轮机叶片上的应用.
主要方法:
- 从蝶的翅膀中提取波纹图案,以设计仿生气翼.
- 坐标实验设计,分析波纹参数 (类型,振幅,强度) 对气翼飞的影响.
- 计算流体动力学 (CFD) 和流体结构相互作用 (FSI) 模拟以评估3D刀片上的性能.
主要成果:
- 将波纹映射到气翼压力侧产生了优越的空气动力学性能.
- 通过波纹型III,振幅 (λ) 为0.6,以及在前边更密集的强度 (n=13) 实现了最佳的 flutter 抑制,减少了 7.405% 的矩系数波动.
- 应用到NREL 15MW叶片显示,当波纹布局长度达到0.85R时,最大安全边缘增加2.940% (0.3431Hz).
结论:
- 拟议的生物模拟波纹结构通过修改局部流场并增强叶片结构刚度,有效地抑制叶片的动.
- 这种被动方法为改善大型风力轮机的空气动力学性能和运行安全提供了有希望的方法.
- 这些发现表明了生物灵感设计在推进风能技术方面的潜力.
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