当前位置: X-MOL 学术Appl. Acoust. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Design, validation, and benchmark tests of the aeroacoustic wind tunnel in SUSTech
Applied Acoustics ( IF 3.4 ) Pub Date : 2020-12-25 , DOI: 10.1016/j.apacoust.2020.107847
Yannian Yang , Yu Liu , Rui Liu , Chao Shen , Pikai Zhang , Renke Wei , Xiaomin Liu , Pengwei Xu

The aeroacoustic wind tunnel at Southern University of Science and Technology (SUSTech) is a new facility commissioned for studies of sound generation mechanisms, noise reduction methods, and aerodynamic designs. The wind tunnel is operated at low Mach numbers and low-to-moderate Reynolds numbers. This study details the design methodology for wind-tunnel major components. The validation tests of the flow quality are performed by pitot-tube and hot-wire measurements, and those of the aeroacoustic performance are conducted by far-field microphone measurements. The aerodynamic and acoustic performance is compared with established data, and the results show that the wind tunnel has a high quality of flow field and low background noise levels. A benchmark test of airfoil tonal noise is conducted by microphone and Particle Image Velocimetry (PIV) measurements. The observed tones exhibit consistent features with existing experimental observations and the mechanisms are explained with the help of flow field near the trailing edge.



中文翻译:

SUSTech中的空气声风洞的设计,验证和基准测试

南方科技大学(SUSTech)的空气声风洞是一个新设施,用于研究声音产生机理,降噪方法和空气动力学设计。风洞以低马赫数和中低雷诺数运行。这项研究详细介绍了风洞主要部件的设计方法。流量质量的验证测试通过皮托管和热线测量进行,而空气声学性能的验证测试则通过远场麦克风测量进行。将空气动力学和声学性能与已建立的数据进行了比较,结果表明该风洞具有较高的流场质量和较低的背景噪声水平。通过麦克风和粒子图像测速(PIV)测量进行机翼音调噪声的基准测试。观察到的音调表现出与现有实验观察结果一致的特征,并借助后缘附近的流场解释了机理。

更新日期:2020-12-25
down
wechat
bug