Evaluation of Wall-Interference Correction Method Using Numerical Analysis and Porous Wall Model

“…Sarradj and Geyer 13 applied symbolic regression of large data set to develop the empirical models capable of describing the noise generation at porous aerofoils. In a numerical study of a new porous wall model, Nambu et al 14 found that a porous wall is effective for reducing blockage, which then affects the Mach number around the aerofoil. For aerofoil fitted with morphing trailing edges, a coupled structure/fluid/noise model implemented by Qing et al 15 demonstrated that an appropriate morphing profile tailoring can improve the aerodynamic and aeroacoustics performance of an aerofoil.…”

Section: Introductionmentioning

confidence: 99%

Effects of porous trailing edge on aerodynamic noise characteristics

Zhang

Chong

2020

International Journal of Aeroacoustics

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The objective of this work is to investigate the effect of the porous trailing edge on the aeroacoustics performance of the NACA 65(12)-10 aerofoil. The motivation behind this study is to investigate the effect of the porous parameters to explore the noise control concepts. Experimental testing in an aeroacoustics open jet wind tunnel was performed at chord-based Reynolds numbers between 0.2 and 0.6 million, and effective angles of attack at ±1.7 degree, including at 0 degrees. The porous trailing edge at porosity 30% with different holes diameters and the length of these porous trailing edges are used in the acoustic experiments. The study reveals that the level of the reduction of the broadband noise becomes larger as the diameter of the holes decreases and the length of the porous trailing edge increases at lower Reynolds numbers. Bluntness-induced tone noise is produced at high Reynolds number. Meanwhile, the porous trailing edge can suppress the laminar instability noise at the middle and low frequency regions.

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CFD/CSD-based flutter prediction method for experimental models in a transonic wind tunnel with porous wall

Guo

et al. 2020

Chinese Journal of Aeronautics

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Evaluation of Wall-Interference Correction Method Using Numerical Analysis and Porous Wall Model

Cited by 7 publications

References 16 publications

Analyzing the effect of wind tunnel wall on the aerodynamic performance of airfoils

Analyzing the effect of wind tunnel wall on the aerodynamic performance of airfoils

Effects of porous trailing edge on aerodynamic noise characteristics

CFD/CSD-based flutter prediction method for experimental models in a transonic wind tunnel with porous wall

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