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Dataset on tip vortex formation noise produced by wall-mounted finite airfoils with sinusoidal and porous tip geometries

机译:具有正弦形和多孔尖端几何形状的壁装有限翼型产生的尖端涡旋形成噪声数据集

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摘要

Airfoil tip vortex formation noise is a significant noise source in many aerodynamic applications such as aircraft, fans, rotors and propellers. The data collection presented in this paper examines the effects of sinusoidal geometry and porosity on the tip vortex formation noise produced by finite length airfoils. The use of serrated and porous materials is inspired by silent owl-wings and is a promising approach to control flow-induced noise. Noise measurements have been taken using a 47-channel planar microphone array in the anechoic wind tunnel at the Brandenburg University of Technology. Over 2600 unique test cases with variations in sinusoidal tip geometry (amplitude and wavelength) and flat tip porosity were measured during the experimental campaign for a NACA0012 and NACA614 airfoil. The microphone data have been processed using acoustic beamforming software named Acoular to produce one-third-octave band tip noise spectra.
机译:在许多空气动力学应用中,例如飞机,风扇,旋翼和螺旋桨,机翼尖端涡流形成噪声是重要的噪声源。本文提出的数据收集检查正弦波几何形状和孔隙度对有限长度翼型产生的尖端涡旋形成噪声的影响。锯齿状和多孔材料的使用受到静音猫头鹰翅膀的启发,是控制流动引起的噪音的一种有前途的方法。勃兰登堡理工大学的消声风洞中使用47通道平面麦克风阵列进行了噪声测量。在针对NACA0012和NACA614机翼的实验活动期间,测量了超过2600个独特的测试用例,这些测试用例具有正弦形的尖端几何形状(振幅和波长)和平坦的尖端孔隙率。麦克风数据已使用名为Acoular的声束成形软件进行了处理,以产生三分之一倍频带的带端噪声频谱。

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