Time-domain multiple traces boundary integral formulation for acoustic wave scattering in 2D
METADATA ONLY
Loading...
Author / Producer
Date
2023-12
Publication Type
Journal Article
ETH Bibliography
yes
Citations
Altmetric
METADATA ONLY
Data
Rights / License
Abstract
We present a novel computational scheme to solve acoustic wave transmission problems over two-dimensional composite scatterers, i.e. penetrable obstacles possessing junctions or triple points. The continuous problem is cast as a local multiple traces time-domain boundary integral formulation. For discretization in time and space, we resort to convolution quadrature schemes coupled to a non-conforming spatial spectral discretization based on second kind Chebyshev polynomials displaying fast convergence. Computational experiments confirm convergence of multistep and multistage convolution quadrature for a variety of complex domains.
Permanent link
Publication status
published
Editor
Book title
Journal / series
Volume
157
Pages / Article No.
216 - 228
Publisher
Elsevier
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Acoustic wave scattering; Wave transmission problems; Convolution quadrature; Time-domain boundary integral operators; Multiple traces formulation; Domain decomposition