03.3 - Basic Fluid Dynamics and Flow Control
ON THE OPTIMIZATION OF (GENERALIZED) IMPEDANCE FOR ACOUSTIC LINERS
E. De Bono, France; A.D. Fernandes, Italy; G. Petrone, Italy; M. Ouisse, France; R. Teloli, Italy; S. De Rosa, Italy
In this work, we provide a review of optimization criteria for acoustic liner impedance, and the reduction of noise transmission in ducts. The new prospectives provided by metamaterials and active liners, require proper guidelines and physical insight on the mechanisms which lead to optimal noise attenuation. The contribution of this work is to combine analytical and numerical tools for general liner design.