Applications of the Multilayer Porous Medium Modeling Approach for Noise Mitigation
Christopher Teruna (TU Delft - Wind Energy)
Leandro Falcão Loureiro Rêgo (TU Delft - Wind Energy)
F Avallone (TU Delft - Wind Energy)
D. Ragni (TU Delft - Wind Energy)
D. Casalino (TU Delft - Wind Energy)
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Abstract
Porous materials have been widely investigated as a mean for noise reduction. Numerical simulations can be used to investigate the physical mechanisms responsible for noise reduction; however, a correct modeling of the porous medium through an equivalent fluid model is essential to minimize the computational costs. This paper reports a detailed review of a few applications of the equivalent fluid model based on a three-layer approach, a method that is particularly useful to account for the variation of porous material thickness in aerospace applications. The multilayer approach has been applied in three relevant aerodynamic noise issues: leading-edge impingement noise, turbulent boundary-layer trailing-edge noise, and jet installation noise. Comparison with experiments is used to validate the simulation approach.