NACA 2412带外凹窝机翼失速延迟特性研究

Q3 Engineering

International Journal of Vehicle Structures and Systems Pub Date : 2022-12-25 DOI:10.4273/ijvss.14.7.13

P. Manikandan, R. Sudharsan, K. Divakar, S. N. Pillai, P. Premkumar

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引用次数: 0

摘要

飞机的气流分离是导致升力下降和压力阻力增加的地面原因之一，最终导致能量损失，机械振动，并可能导致飞机的结构故障。人们对延缓边界层分离进行了大量的研究工作。其中一项工作就是在机翼表面安装各种有源和无源装置。在这项研究工作中，我们使用了一种这样的装置，称为被动酒窝。通过在机翼上表面放置这些凹痕，可以诱导湍流产生涡流，使附面层在一定程度上附着在机翼表面，从而增加飞机的失速角。在本次研究工作中，我们在机翼上表面的不同位置放置了向外的酒窝，并在不同的攻角下进行了模拟，观察效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Stall Delay Characteristics Study of NACA 2412 Wing with Outward Dimples

Flow separation in an aircraft is one of the ground causes of decrease in the lift and increase in the pressure drag which eventually leads to loss of energy, vibrations in machinery and may cause structural failure of the aircraft. Many studies and research works have been carried out on delaying boundary layer separation. One of such works is the implementation of various active and passive devices on the surface of the wing. In this research work, we have used one such device called a passive dimple. By placing these dimples on the upper surface of the wing, a turbulent flow is induced which produces vortices, causing the boundary layer to stay attached to the surface of the wing to some extent and thereby increasing the stall angle of the aircraft. In this research work, we have placed outward dimples on the upper surface of the wing at various positions and ran simulations at different angle of attacks to observe the effects.

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来源期刊

International Journal of Vehicle Structures and Systems Engineering-Mechanical Engineering

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The International Journal of Vehicle Structures and Systems (IJVSS) is a quarterly journal and is published by MechAero Foundation for Technical Research and Education Excellence (MAFTREE), based in Chennai, India. MAFTREE is engaged in promoting the advancement of technical research and education in the field of mechanical, aerospace, automotive and its related branches of engineering, science, and technology. IJVSS disseminates high quality original research and review papers, case studies, technical notes and book reviews. All published papers in this journal will have undergone rigorous peer review. IJVSS was founded in 2009. IJVSS is available in Print (ISSN 0975-3060) and Online (ISSN 0975-3540) versions. The prime focus of the IJVSS is given to the subjects of modelling, analysis, design, simulation, optimization and testing of structures and systems of the following: 1. Automotive vehicle including scooter, auto, car, motor sport and racing vehicles, 2. Truck, trailer and heavy vehicles for road transport, 3. Rail, bus, tram, emerging transit and hybrid vehicle, 4. Terrain vehicle, armoured vehicle, construction vehicle and Unmanned Ground Vehicle, 5. Aircraft, launch vehicle, missile, airship, spacecraft, space exploration vehicle, 6. Unmanned Aerial Vehicle, Micro Aerial Vehicle, 7. Marine vehicle, ship and yachts and under water vehicles.