Communication Dans Un Congrès Année : 2020

Time-domain simulation of a flow duct with extended-reacting acoustic liners

Résumé

A finite-difference time-domain (FDTD) approach is pro-posed to model extended-reacting liners under a grazingmean flow. It is based on an equivalent fluid model ofthe material together with the auxiliary differential equa-tion method (ADE). The methodology is applicable to anyliner material amenable to an equivalent fluid description,such as rigid-frame porous materials and metamaterials. Ithas been validated against a semi-analytical solution in a1D test case and against experimental measurements in aduct.

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Dates et versions

hal-03221400 , version 1 (20-05-2021)

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Antoni Alomar, Didier Dragna, Marie-Annick Galland. Time-domain simulation of a flow duct with extended-reacting acoustic liners. eForum Acusticum, Dec 2020, Lyon, France. pp.407-409, ⟨10.48465/fa.2020.0253⟩. ⟨hal-03221400⟩
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