Design and optimization of acoustic liners with a shear grazing flow: OPAL software applications
| Autor: | Rémi Roncen, Pierre Vuillemin, Patricia Klotz, Frank Simon, Fabien Méry, Delphine Sebbane, Estelle Piot |
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| Přispěvatelé: | ONERA / DMPE, Université de Toulouse [Toulouse], ONERA-PRES Université de Toulouse, ONERA / DTIS, Université de Toulouse [Toulouse], WIBAUX, Laurine |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | InterNoise 2021 InterNoise 2021, Aug 2021, Washington, DC (Virtual event), United States. pp.IN21_1308 HAL |
| Popis: | International audience; A software platform named OPAL was developed to perform multi-objective optimization of metasurface acoustic liners. This paper focuses on different numerical aspects of liner design. A numerical analysis is conducted, mimicking an acoustic project. OPAL's goal is to allow the user to assemble a large panel of parallel/serial assemblies of unit acoustic elements (foams, perforated plates, cavities, etc.). The material properties are then optimized relatively to given weighted objectives (noise reduction, total size of the sample). In the present applications, noise reduction is predicted on some reference configurations, which are computed with a 2D high-order Discontinuous Galerkin resolution of the linearised Euler equations, coupled with a reduced order model. Experimental results are also given for the transmission loss realised by a meta-surface created during the development of OPAL. |
| Databáze: | OpenAIRE |
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