@inproceedings{3b06b1f67deb4357a54a6a72bbe253ac,
title = "Drum-like liners to attenuate low frequencies in presence of flow: an analytical, experimental and numerical study",
abstract = "Over the last twenty years, many ideas have been suggested to design sub-wavelength absorbers that couple a classical single-degree of freedom liner with a vibrating part that resonates at low frequencies. In this paper, the acoustic behaviour of a light and thin sound absorber composed of an elastic latex membrane placed on top of a closed 3D-printed cavity is studied. It is found experimentally and analytically that membrane modes imply a great shift of the cavity resonance towards the low frequencies and add several supplementary transmission drops. To investigate the effects of flow, numerical time-domain simulations are conducted and validated after comparisons with experimental data. The three approaches show that membrane absorbers are highly resistive, with a weak sensibility against flow and non linear effects. They are thus well-suited for absorption purposes in aeronautic applications.",
author = "Charlotte Comte and Thomas Humbert and Yves Aur{\'e}gan and Gw{\'e}na{\"e}l Gabard and Lam, {Garret C.Y.} and Leung, {Randolph C.K.}",
note = "Publisher Copyright: {\textcopyright} 2022, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.; 28th AIAA/CEAS Aeroacoustics Conference, 2022 ; Conference date: 14-06-2022 Through 17-06-2022",
year = "2022",
month = jun,
day = "13",
doi = "10.2514/6.2022-2822",
language = "English",
isbn = "9781624106644",
series = "28th AIAA/CEAS Aeroacoustics Conference, 2022",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
booktitle = "28th AIAA/CEAS Aeroacoustics Conference, 2022",
address = "United States",
}