Aerodynamic Characteristics of 3D Bionic Blade Inspired by Owl Wing

doi:10.7652/xjtuxb201609018

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Aerodynamic Characteristics of 3D Bionic Blade Inspired by Owl Wing

更新时间：2025-07-09

- Aerodynamic Characteristics of 3D Bionic Blade Inspired by Owl Wing
- Vol. 50, Issue 9, Pages: 111-118(2016)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201609018
  CLC： TB17
- Online First：10 September 2016，
  
  Published：2016
- 稿件说明：
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Aerodynamic Characteristics of 3D Bionic Blade Inspired by Owl Wing[J]. 2016, 50(9): 111-118.
DOI：

Aerodynamic Characteristics of 3D Bionic Blade Inspired by Owl Wing[J]. 2016, 50(9): 111-118. DOI： 10.7652/xjtuxb201609018.

摘要

基于仿生逆向重构方法对具有静音飞行特性的长耳鸮翅膀进行拟合

得到仿长耳鸮翅膀的三维叶片模型。采用大涡模拟方法对仿鸮翼型叶片流动进行数值模拟

研究了2种雷诺数(Re=16 000

70 000)下不同攻角时的鸮翼仿生叶片的流场结构

揭示了仿鸮翼型叶片的流动控制机理。研究结果表明:基于长耳鸮翅膀的仿生翼型叶片在2种雷诺数下均具有优异的升力特性

其中Re=70 000时的升力系数相对较大

最大升力系数为1.26

但流动失速攻角也相对较大; 靠近叶根处叶片前缘部分的上弯结构是仿生叶片具有较高升力系数的重要因素; 随着攻角的增大

受沿叶片流动方向逆压梯度的影响

叶片表面气流无法保持附面流动状态

边界层逐渐发生分离

在叶片下游处产生了明显的不规则涡结构

从而导致流动恶化

这也是仿生叶片产生涡流噪声的原因。

Abstract

Following reverse reconstruction ideals

as a bionic object

long-eared owl wing with silent flight characteristics is fitted to establish a three-dimensional bionic blade model. The flow over the bionic blade is simulated numerically with large-eddy simulation(LES)method. The flow structures at different angles of attack(AoA)are investigated to reveal the flow control mechanisms of bionic blade when Reynolds number gets 16 000 and 70 000 respectively. The numerical results show that the bionic blade based on the long-eared owl wing possesses excellent lift characteristics at two different Reynolds numbers. When Reynolds number is 70 000

the maximum lift coefficient of the bionic blade is 1.26 but with a larger stall angle. The important impact factor for the lift coefficient of the bionic blade is the bending structure near the leading edge from the blade root. Because of the influence of adverse pressure gradient

the airflow cannot be kept adhering to the blade surface and the boundary layer starts to separate gradually with decreasing of the angle of attack. The irregular vortex structures generated from the downstream of bionic blade lead to a deterioration of flow status over the bionic blade

which is also the reason of the vortex noise from bionic blade.

关键词

Keywords

references

GRAHAM R R. The silent flight of owls [J]. Journal of the Royal Aeronautical Society, 1934, 38: 837-843.

LILLEY G M. A study of the silent flight of the owl: AIAA 2340 [R]. Reston, VA, USA: AIAA, 1998.

KLÄN S, BACHMANN T, KLAAS M, et al. Experimental analysis of the flow field over a novel owl based airfoil [J]. Experiments in Fluids, 2009, 46(5): 975-989.

任露泉, 孙少明, 徐成宇. 鸮翼前缘非光滑形态消声降噪机理 [J]. 吉林大学学报(工学版), 2008, 38(增刊1): 126-131.

REN Luquan, SUN Shaoming, XU Chenyu. Noise reduction mechanism of non-smooth leading edge of owl wing [J]. Journal of Jilin University(Engineering and Technology Edition), 2008, 38(s1): 126-131.

徐成宇, 钱志辉, 刘庆平, 等. 基于长耳鸮翼前缘的仿生耦合翼型气动性能 [J]. 吉林大学学报(工学版), 2010, 40(1): 108-112.

XU Chengyu, QIAN Zhihui, LIU Qingping, et al. Aerodynamic performance of bionic coupled foils based on leading edge of long-eared owl wing [J]. Journal of Jilin University(Engineering and Technology Edition), 2010, 40(1): 108-112.

孙少明, 任露泉, 徐成宇. 长耳鸮皮肤和覆羽耦合吸声降噪特性研究 [J]. 噪声与振动控制, 2008, 28(3): 119-123.

SUN Shaoming, REN Luquan, XU Chengyu. Research on coupling sound absorption property of owl skin and feather [J]. Noise and Vibration Control, 2008, 28(3): 119-123.

LIU T, KUYKENDOLL K, RHEW R, et al. Avian wing geometry and kinematics [J]. AIAA Journal, 2006, 44(5): 954-963.

廖庚华, 杨莹, 胡钦超, 等. 长耳鸮翅膀的三维建模 [J]. 吉林大学学报(工学版), 2012, 42(增刊1): 423-427.

LIAO Genghua, YANG Ying, HU Qinchao, et al. Three-dimensional modeling of long-eared wing [J]. Journal of Jilin University(Engineering and Technology Edition), 2012, 42(s1): 423-427.

葛长江, 葛美辰, 梁平, 等. 基于鸮翼的仿生翼型噪声机理研究 [J]. 农业机械学报, 2013, 44(增刊1): 292-296.

GE Changjiang, GE Meichen, LIANG Ping, et al. Investigation of noise mechanism based on owl wing [J]. Transactions of the Chinese Society for Agricultural Machinery, 2013, 44(s1): 292-296.

LIU Q, QI D, TANG H. Computation of aerodynamic noise of centrifugal fan using large eddy simulation approach, acoustic analogy, and vortex sound theory [J]. Proceedings of the Institution of Mechanical Engineers: Part C Journal of Mechanical Engineering Science, 2007, 221(11): 1321-1332.

HUNT J C R, WRAY A A, MOIN P. Eddies, streams, and convergence zones in turbulent flows: CTR-S88 [R]. Stanford, CA, USA: Center for Turbulence Research, 1988: 193-208.

KIM T, JEON M, LEE S, et al. Numerical simulation of flatback airfoil aerodynamic noise [J]. Renewable Energy, 2014, 65(5): 192-201.

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