Wall Interference Assessment of Two-Dimensional Wind Tunnel Test Using Panel Method

Xie, Yi; Liu, Guangyuan; Chen, Dehua

doi:10.1109/icet49382.2020.9119701

Cited by 1 publication

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Doing so, however, usually entails a computational complexity and/or cost which may restrict the generality of the observations made, if only because it prevents extensive parametric investigations to be performed. Therefore, one may wish to rather privilege the use of analytical means, in the fashion of what was made for exploring the aerodynamic installation effects incurred by closed-vein wind tunnels [40,41]. To the author's knowledge, assessing analytically their acoustic counterpart has not been attempted yet.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Study of the Acoustic Installation Effects in Closed-Vein Wind Tunnels for the Experimental Characterization of Trailing Edge Noise

Redonnet

2021

Applied Sciences

View full text Add to dashboard Cite

This study focuses on the acoustic installation effects that may occur during typical aeroacoustic experiments when the latter are conducted in a closed-vein wind tunnel. More precisely, in regard to the specific problem of airfoil trailing edge noise, an analytical model is derived, which allows predicting the wall-induced reverberation effects that such a noise shall be subjected to, when radiating within a closed-vein, hard-wall, wind tunnel. These effects are then assessed through a parametric investigation so as to characterize their impact on in situ acoustic measurements that would be performed using flush-mounted microphones located on the vein’s walls. From a phenomenological perspective, the study highlights how important the reverberation effects by the vein can be. In particular, results reveal how their impact on the noise measurements may greatly vary, depending on the trailing edge noise source location (i.e., the airfoil incidence) and, to a lesser extent, its frequency. The outcomes allow identifying these locations where the installation effects are least, i.e., where to better position a flush-mounted microphone, should in situ noise measurements be conducted. From a methodological viewpoint, the study showcases how the proposed formalism could constitute a simple albeit useful diagnosis tool for mitigating the experimental biases weighing on airfoil trailing edge noise tests to be conducted within closed-vein facilities, whether this would be done a priori by flush-mounting the microphone(s) where these biases are minimal or a posteriori by de-biasing the noise measurements accordingly.

show abstract

Section: Introductionmentioning

confidence: 99%

Theoretical Study of the Acoustic Installation Effects in Closed-Vein Wind Tunnels for the Experimental Characterization of Trailing Edge Noise

Redonnet

2021

Applied Sciences

View full text Add to dashboard Cite

show abstract

Wall Interference Assessment of Two-Dimensional Wind Tunnel Test Using Panel Method

Cited by 1 publication

References 10 publications

Theoretical Study of the Acoustic Installation Effects in Closed-Vein Wind Tunnels for the Experimental Characterization of Trailing Edge Noise

Theoretical Study of the Acoustic Installation Effects in Closed-Vein Wind Tunnels for the Experimental Characterization of Trailing Edge Noise

Contact Info

Product

Resources

About