TY - JOUR
T1 - A numerical model of an acoustic metamaterial using the boundary element method including viscous and thermal losses
AU - Juhl, Peter Møller
AU - Cutanda Henríquez, Vicente
AU - Andersen, Peter Risby
AU - Jensen, Jacob Søndergaard
AU - Sánchez-Dehesa, Jose
PY - 2017
Y1 - 2017
N2 - In recent years, boundary element method (BEM) and finite element method (FEM) implementations of acoustics in fluids with viscous and thermal losses have been developed. They are based on the linearized Navier-Stokes equations with no flow. In this paper, such models with acoustic losses are applied to an acoustic metamaterial. Metamaterials are structures formed by smaller, usually periodic, units showing remarkable physical properties when observed as a whole. Acoustic losses are relevant in metamaterials in the millimeter scale. In addition, their geometry is intricate and challenging for numerical implementation. The results are compared with existing measurements.
AB - In recent years, boundary element method (BEM) and finite element method (FEM) implementations of acoustics in fluids with viscous and thermal losses have been developed. They are based on the linearized Navier-Stokes equations with no flow. In this paper, such models with acoustic losses are applied to an acoustic metamaterial. Metamaterials are structures formed by smaller, usually periodic, units showing remarkable physical properties when observed as a whole. Acoustic losses are relevant in metamaterials in the millimeter scale. In addition, their geometry is intricate and challenging for numerical implementation. The results are compared with existing measurements.
KW - Boundary element method
KW - acoustic metamaterials
KW - viscous and thermal acoustic losses
U2 - 10.1142/S0218396X17500060
DO - 10.1142/S0218396X17500060
M3 - Journal article
SN - 0218-396X
VL - 25
JO - Journal of Computational Acoustics
JF - Journal of Computational Acoustics
IS - 4
M1 - 1750006
ER -