Applications of the Multilayer Porous Medium Modeling Approach for Noise Mitigation

Journal article (2021)

Authors

C. Teruna Wind Energy - Aerospace Engineering
Leandro Rego Wind Energy - Aerospace Engineering
F. Avallone Wind Energy - Aerospace Engineering
D. Ragni Wind Energy - Aerospace Engineering
D. Casalino Wind Energy - Aerospace Engineering
Research Group
Wind Energy (Aerospace Engineering) (TU Delft)
Copyright: © 2021 C. Teruna, Leandro Rego, F. Avallone, D. Ragni, D. Casalino
DOI
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https://doi.org/10.1061/(ASCE)AS.1943-5525.0001326
Numerical simulations Noise reduction Aerodynamic noise Multilayer model Porous material
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Published Date

2021

Language

English

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Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Wind Energy

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.