Bi-functional metamaterial based on Helmholtz resonators for sound and heat insulation
Abstract
Over the last few decades, both heat and broadband sound reduction have become increasingly significant as a result of concerns about the environment and noise pollution. In order to address this challenge, we provide a finite element analysis study of an acoustic metamaterial panel consisting of a unit cell made of two Helmholtz Resonators with a guide in between. These panels can attenuate and control both sound propagation and heat flux. For noise pollution in a building, we first determine the geometric dimension that corresponds to the operative frequency range. Furthermore, we investigate the sound transmission loss of the proposed panel as a function of the periodicity of an array of unit cells. Additionally, we investigate the thermal flux induced by the panel, especially within a 24-hour period. The simulation results show that the proposed panel provides a level of sound attenuation within the frequency range of 400 Hz to 2.5 kHz, as well as interesting heat protection. The structure is compared to panels made up of a homogeneous medium and without Helmholtz resonators.
Keywords
Cite
@article{arxiv.2310.05098,
title = {Bi-functional metamaterial based on Helmholtz resonators for sound and heat insulation},
author = {Brahim Lemkalli and Zine El Abiddine Fellah and Sébastien Guenneau and Khalid Lamzoud and Abdellah Mir and Younes Achaoui},
journal= {arXiv preprint arXiv:2310.05098},
year = {2023}
}
Comments
7 pages, 10 figures