通过式尖端设计来被动控制翅膀尖端
Junchen Tan1,2, Shūji Ōtomo3,4, Ignazio Maria Viola1
1School of Engineering, Institute for Energy Systems, University of Edinburgh, Edinburgh, EH9 3FB UK.
Experiments in fluids
|October 21, 2025
概括
新型槽翼尖有效控制尖端,显著降低了40%的压力下降,对起重和阻力的影响最小. 这种被动流量控制方法提高了空气动力学和水力动力学系统的效率.
科学领域:
- 空气动力学和流体力学
- 水力动力学是指水力动力学.
- 的动力学 的动力学
背景情况:
- 由有限的翅膀产生的尖端旋会导致流量损失,噪音,振动和空洞化.
- 有效控制尖端旋对于提高各种基于翼和叶片的系统的效率至关重要.
研究的目的:
- 通过使用新式尖端设计,研究翅膀尖端的特性和控制.
- 用实验来评估不同槽尖端配置对尖端旋行为和性能的影响.
主要方法:
- 利用粒子图像速度测量 (PIV) 进行沿流和横流测量,以可视化流场.
- 开发并测试了四种不同的沟尖设计,包括倾斜和收缩的沟.
- 采用一个减少顺序的模型,以估计压力下降基于旋旋的强度.
主要成果:
- 槽式尖端设计显著降低了主要尖端旋核心内的速度大小和吸收.
- 尖端分离被抑制,主要尖端的强度被减轻.
- 观察到的旋转强度降低,尺寸扩大,估计压力下降减少40%.
结论:
- 槽式尖端设计提供了一种有效的被动策略,用于修改尖端的行为并减轻压力下降.
- 这些设计显示出在翼机,轮机和螺旋中提高性能的潜力,起重和阻力变化微不足道.
- 这些发现支持为海洋和航空航天应用开发先进的被动控制策略.
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