scholarly journals Semi-Empirical Aeroacoustic Noise Prediction Code for Wind Turbines

2003 ◽  
Author(s):  
P Moriarty ◽  
P Migliore
Keyword(s):  
Wind Turbines ◽  
Noise Prediction ◽  
Aeroacoustic Noise ◽  
Semi Empirical

Noise Prediction in Design of Low Pressure Rotor-Only Axial Fans

2011 ◽  
Author(s):  
Jie Zhang ◽  
Shaoping Zhou ◽  
Xiaoling Ge
Keyword(s):  
Sound Pressure ◽  
Broad Band ◽  
Low Pressure ◽  
Noise Prediction ◽  
Blade Design ◽  
Prediction Program ◽  
Aeroacoustic Noise ◽  
Blunt Trailing Edge ◽  
Axial Fans ◽  
Semi Empirical

A noise prediction program has been incorporated into a blade design process of the arbitrary vortex flow rotor-only axial fans which are widely used in low pressure applications. Parametrical studies of different geometrical designs are conducted to investigate the influence on noise radiation from axial fans. The noise prediction program is based on the Carolus’s semi-empirical model, in which the broad-band aeroacoustic noise is mostly attributed to three independent sources: incident turbulence, turbulent boundary layer, and blunt trailing edge. In addition, the well-known Fukano’s vortex shedding model is also utilized for indicative comparison. It is indicated that the total sound pressure level is most sensitive to the flow relative velocity, while the chord length can be considered as a secondary cause.

Aeroacoustic noise prediction for wind turbines using Large Eddy Simulation

2015 ◽  
Vol 145 ◽  
pp. 17-29 ◽  
Author(s):  
Sahan H. Wasala ◽  
Rupert C. Storey ◽  
Stuart E. Norris ◽  
John E. Cater
Keyword(s):  
Large Eddy Simulation ◽  
Wind Turbines ◽  
Noise Prediction ◽  
Aeroacoustic Noise ◽  
Eddy Simulation ◽  
Large Eddy
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