在一个鸟启发的空气箔使用尾缘锯齿降噪

Q1 Mathematics
Engineered Science Pub Date : 2023-01-01 DOI:10.30919/es951
Shiva Prasad U U, N. R
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引用次数: 0

摘要

目前的工作涉及Tyto Alba(谷仓猫头鹰)的仿生翼型在降噪方面的功效。由于它们独特的翅膀形态,猫头鹰以安静的飞行而闻名,无论是滑翔还是拍打,它们的噪音都低得惊人。翼型的低噪音运作的灵感来自于这些猫头鹰飞行的显著特点。在过去进行的研究表明,一个翼型,有一个广泛的正弦剖面只能在一定程度上降低噪音。作为一个耦合元件,一个猫头鹰翼启发脊被添加到翼型的后缘与锯齿在这项工作。这种提出的降噪方法使用后缘锯齿显示了仿生启发翼型与现有方法的有效性。利用计算工具进行了数值研究,结果表明所提出的仿生结构可以更有效地降低噪声。结果表明,宽波长的低频噪声较小,而高频噪声较大。本文的结论是,猫头鹰启发的后缘锯齿可能是风力涡轮机,飞机,无人机和其他流体机械的有效气动声学控制装置。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Noise Reduction in a Bird Inspired Aero Foil using Trailing-Edge Serrations
The current work deals with the efficacy of the bionic-inspired airfoil of Tyto Alba (a barn owl) in noise reduction. Due to their distinct wing morphology, owls are noted for their quiet flying, which is astonishingly low-noise both when gliding and flapping. The low-noise operation of airfoil is inspired by these remarkable characteristics of owl flight. Research conducted in the past suggests that an airfoil that has an extensive sinusoidal profile can only reduce noise to a certain extent. As a coupling element, an owl-wing-inspired ridge is added to the trailing edge of airfoils with serrations in this work. This proposed method of noise reduction using trailing edge serrations showed the efficacy of a bionic-inspired airfoil with the existing approaches. A numerical study was performed using computational tools and has shown that the proposed bionic-inspired structure could reduce noise more effectively. The results show that wide wavelengths have less low-frequency tonal noise but more at high frequencies. This paper concludes that owl-inspired trailing edge serrations may be an effective aero-acoustic control device for wind turbines, aircraft, drones, and other fluid machines.
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来源期刊
Engineered Science
Engineered Science Mathematics-Applied Mathematics
CiteScore
14.90
自引率
0.00%
发文量
83
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