Comparison Between Aerodynamic and Aeroacoustic Performance of Subsonic Airfoil Shapes
Aerodynamic noise is an important criterion in the design of aircraft and wind turbines. Addressing noise at the aircraft conceptual design phase is required to properly account for the multidisciplinary nature of the problem. A fundamental understanding of how the airfoil and wing shapes affect the trailing-edge (TE) noise is therefore necessary. In this paper, we investigate the relationship between the airfoil TE noise and its basic shape parameters, such as camber and thickness ratio. A recently developed noise metric model, which is based on computational fluid dynamic simulations using the steady Reynolds-Averaged Navier-Stokes equations, is used. Parametric and optimization studies reveal that the maximum camber, the location of maximum camber, and the thickness ratio have significant effect on the noise metric. The results of optimization show that an airfoil with maximized aerodynamic performance does not have minimum noise metric value, indicating that a trade-off is necessary when considering noise as a part of airfoil design.
L. Leifsson et al., "Comparison Between Aerodynamic and Aeroacoustic Performance of Subsonic Airfoil Shapes," 42nd AIAA Fluid Dynamics Conference and Exhibit Proceedings, American Institute of Aeronautics and Astronautics (AIAA), Jan 2012.
The definitive version is available at http://dx.doi.org/10.2514/6.2012-3145
42nd AIAA Fluid Dynamics Conference and Exhibit
Mechanical and Aerospace Engineering
Article - Conference proceedings
© 2012 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.