对NACA 13112形态变形翼翼的数值调查
Mădălin-Dorin Feraru1, Daniel Măriuța2, Marius Stoia-Djeska1
1Faculty of Aerospace Engineering, National University of Science and Technology Politehnica Bucharest, 060042 Bucharest, Romania.
Biomimetics (Basel, Switzerland)
|October 25, 2024
概括
这项研究表明,调整气翼曲率可以改善升力. 在落后边缘附近增加的变形凸增强了空气动力学性能,这对于直升机旋翼叶片和机翼至关重要.
科学领域:
- 航空航天工程 航空航天工程
- 计算流体动力学的流体动力学.
- 流体力学 流体力学 流体力学
背景情况:
- IAR 330 PUMA直升机的主旋翼叶片在特定的空气动力学模式下运行.
- 了解在不同条件下的气形表现对于直升机的效率和稳定性至关重要.
- 形态化气翼技术为适应性空气动力学控制提供了潜力.
研究的目的:
- 为了数值地研究一个NACA13112气翼的2D空气动力学特征.
- 在相关操作条件下,分析尾行边的凸轮调整对提升和阻力的影响.
- 为了确定关键参数,如变形长度,影响变形气层性能.
主要方法:
- 使用了计算流体动力学 (CFD) 模拟.
- 模拟涵盖了-3°至18°的攻击角度范围和0.38.38.的马赫数.
- 在Re=5.138×10^6.6时,对NACA13112气翼 (弦长c=600毫米) 进行了不同程度的尾翼曲.
主要成果:
- 发现,在尾行边缘增加的变形凸起显著增强了升力.
- 这项研究确定了最大的气翼升力取决于变形的和弦长度.
- 静态升力和阻力变化计算了不同的凸配置.
结论:
- 调整尾部边缘的凸起是改善气翼升起的有效方法.
- 变形部分的长度是最大限度地提高气翼提升的关键因素.
- 这种变形方法对各种空气动力学结构具有广泛的适用性,包括螺旋,尾和翅膀.
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