Experimental Study of the Trailing Edge Noise Generated by Axial Flow Fans

2007 ◽  
Author(s):  
Alessandro Bongiovì ◽  
Andrea Cattanei ◽  
Riccardo Ghio
Keyword(s):  
Experimental Study ◽  
Axial Flow ◽  
Trailing Edge ◽  
Trailing Edge Noise

An experimental study of trailing edge noise from a heaving airfoil

2020 ◽  
Vol 147 (6) ◽  
pp. 4020-4031
Author(s):  
Teng Zhou ◽  
Xin Zhang ◽  
Siyang Zhong
Keyword(s):  
Experimental Study ◽  
Trailing Edge ◽  
Trailing Edge Noise

An experimental study of trailing edge noise from a pitching airfoil

2019 ◽  
Vol 145 (4) ◽  
pp. 2009-2021 ◽  
Author(s):  
Teng Zhou ◽  
Yuhao Sun ◽  
Ryu Fattah ◽  
Xin Zhang ◽  
Xun Huang
Keyword(s):  
Experimental Study ◽  
Trailing Edge ◽  
Pitching Airfoil ◽  
Trailing Edge Noise

Prediction of blade trailing‐edge noise of an axial flow fan

2008 ◽  
Vol 123 (5) ◽  
pp. 3687-3687
Author(s):  
Alain Guedel ◽  
Arthur Finez ◽  
Gérald Perrin ◽  
Michel Roger
Keyword(s):  
Axial Flow ◽  
Axial Flow Fan ◽  
Trailing Edge ◽  
Trailing Edge Noise

Prediction of the Blade Trailing-Edge Noise of an Axial Flow Fan

2011 ◽  
Author(s):  
Alain Guedel ◽  
Mirela Robitu ◽  
Nicolas Descharmes ◽  
Didier Amor ◽  
Je´rome Guillard
Keyword(s):  
Input Data ◽  
Pressure Fluctuations ◽  
Axial Flow ◽  
Suction Side ◽  
Axial Fan ◽  
Trailing Edge ◽  
Frequency Spectra ◽  
Pressure Transducers ◽  
Trailing Edge Noise ◽  
Wall Pressure Fluctuations

The objective of this work is to predict the trailing-edge noise of axial fans with an analytical model deduced from an extension of Amiet’s formulation. The input data of the acoustic model are the frequency spectra and the spanwise correlation length scales of the wall-pressure fluctuations on the blade suction side close to the trailing edge. This model was successfully validated in former studies on single steady airfoils in anechoic wind tunnels and, to a lesser extent, on an axial fan equipped with small unsteady pressure transducers flush mounted on the blade suction side. The present research is carried out on a 6-blade axial fan no longer equipped with embedded pressure transducers. The input data of the prediction are then deduced from non-dimensional spectra and correlation lengths of the pressure fluctuations measured in the previous study and RANS simulations performed on the test fan. A validation of the prediction method is made by comparing the predicted and measured sound power spectra of the fan for two blade pitch angles and different operating points.

Computation of trailing-edge noise due to turbulent flow over an airfoil

AIAA Journal ◽  
2002 ◽  
Vol 40 ◽  
pp. 2206-2216 ◽  
Author(s):  
A. Oberai ◽  
F. Roknaldin ◽  
T. J. R. Hughes
Keyword(s):  
Turbulent Flow ◽  
Trailing Edge ◽  
Trailing Edge Noise
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