Effects of simplified horn ice shapes on flow structures around an airfoil

IF 4.6 2区工程技术 Q1 ENGINEERING, MECHANICAL Acta Mechanica Sinica Pub Date : 2024-05-14 DOI:10.1007/s10409-023-23344-x

Chengyi Zheng (, ), Zheyan Jin (, ), Xuzhi Du (, ), Qiaotian Dong (, ), Zhigang Yang (, )

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Abstract

Ice can change the leading-edge profile of the airfoil and affect the overall aerodynamic performance of the airfoil. Studying the effects of simplified horn ice shapes on the flow field structures can provide a valuable reference for aircraft anti-icing/deicing design. Detailed experimental measurements of the flow field structures of the airfoil with different horn ice shapes were carried out in a low-speed direct wind tunnel using the particle image velocimetry technique. Three simplified ice shapes and the original ice shape were tested at different angles of attack. The results showed that, within the scope of the present study, there was a maximum 35.11% difference in the flow field parameters between the airfoil with simplified ice shapes and the airfoil with the original ice shape. Compared with the original ice shape case, the separation bubbles of the simplified ice shape cases were farther away from the leading edge and trailing edge of the airfoil. Among the three ice shape simplification methods, adding connecting lines between rectangular ice tips was found to have the optimum simplification effects in the flow structures and the airfoil performances. Using this simplification method, the maximum flow field differences at various angles of attack were within 14.88% in the selected two regions.

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简化角冰形状对机翼周围流动结构的影响

冰会改变机翼的前缘轮廓，影响机翼的整体气动性能。研究简化角冰形状对流场结构的影响可为飞机防冰/除冰设计提供有价值的参考。利用粒子图像测速技术，在低速直接风洞中对不同角冰形状的机翼流场结构进行了详细的实验测量。在不同攻角下测试了三种简化冰形和原始冰形。结果表明，在本研究范围内，简化冰形机翼与原始冰形机翼的流场参数最大相差 35.11%。与原始冰型相比，简化冰型的分离气泡距离机翼前缘和后缘更远。在三种冰形简化方法中，在矩形冰尖之间添加连接线对流动结构和机翼性能的简化效果最佳。使用这种简化方法，在选定的两个区域，不同攻角下的最大流场差在 14.88% 以内。

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来源期刊

Acta Mechanica Sinica 物理-工程：机械

CiteScore

5.60

自引率

20.00%

发文量

1807

审稿时长

4 months

期刊介绍： Acta Mechanica Sinica, sponsored by the Chinese Society of Theoretical and Applied Mechanics, promotes scientific exchanges and collaboration among Chinese scientists in China and abroad. It features high quality, original papers in all aspects of mechanics and mechanical sciences. Not only does the journal explore the classical subdivisions of theoretical and applied mechanics such as solid and fluid mechanics, it also explores recently emerging areas such as biomechanics and nanomechanics. In addition, the journal investigates analytical, computational, and experimental progresses in all areas of mechanics. Lastly, it encourages research in interdisciplinary subjects, serving as a bridge between mechanics and other branches of engineering and the sciences. In addition to research papers, Acta Mechanica Sinica publishes reviews, notes, experimental techniques, scientific events, and other special topics of interest. Related subjects » Classical Continuum Physics - Computational Intelligence and Complexity - Mechanics