Generation of acoustic solitary waves in a lattice of Helmholtz resonators - Archive ouverte HAL
Journal Articles Wave Motion Year : 2015

Generation of acoustic solitary waves in a lattice of Helmholtz resonators

Abstract

This paper addresses the propagation of high amplitude acoustic pulses through a 1D lattice of Helmholtz resonators connected to a waveguide. Based on the model proposed by Sugimoto (J. Fluid. Mech., 244 (1992), 55-78), a new numerical method is developed to take into account both the nonlinear wave propagation and the different mechanisms of dissipation: the volume attenuation, the linear visco-thermic losses at the walls, and the nonlinear absorption due to the acoustic jet formation in the resonator necks. Good agreement between numerical and experimental results is obtained, highlighting the crucial role of the nonlinear losses. Different kinds of solitary waves are observed experimentally with characteristics depending on the dispersion properties of the lattice.
Fichier principal
Vignette du fichier
Wm3-V1.pdf (1.02 Mo) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

hal-01069252 , version 1 (30-09-2014)

Identifiers

Cite

Olivier Richoux, Bruno Lombard, Jean-François Mercier. Generation of acoustic solitary waves in a lattice of Helmholtz resonators. Wave Motion, 2015, 56, pp.85-99. ⟨10.1016/j.wavemoti.2015.02.005⟩. ⟨hal-01069252⟩
405 View
385 Download

Altmetric

Share

More