Results 1 to 10 of about 10,307 (149)
Perfectly matched layers in negative index metamaterials and plasmas* [PDF]
ESAIM: Proceedings and Surveys, 2015 This work deals with the stability of Perfectly Matched Layers (PMLs). The first part is a survey of previous results about the classical PMLs in non-dispersive media (construction and necessary condition of stability).
Bécache Éliane +3 more
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Mathematics, 2023 Understanding the effect of vortexes on sound propagation is of great significance in the field of target detection and acoustic imaging. A prediction algorithm of the two-dimensional vortex scattering is realized based on a finite-difference frequency ...
Yongou Zhang +3 more
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Acoustic waveform inversion in frequency domain: Application to a tunnel environment
Underground Space, 2021 Waveform inversion is an approach used to find an optimal model for the velocity field of a ground structure such that the dynamic response is close enough to the given seismic data.
Christopher Riedel +4 more
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Computation of Resonance Modes in Open Cavities with Perfectly Matched Layers
Proceedings, 2020 During the last decade, several authors have addressed that the Perfectly Matched Layers (PML) technique can be used not only for the computation of the near-field in time-dependent and time-harmonic scattering problems, but also to compute numerically ...
Luis M. Hervella-Nieto +2 more
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Perfectly matched layer for biaxial hyperbolic materials
Optics Express, 2023 Hyperbolic materials have attracted considerable interest for their unique open hyperbolic dispersion properties. These materials support high-momentum propagating modes and strong light confinement, leading to a wide range of applications including super-resolution technologies, negative refraction and long-life propagation.
Zixun Ge, Sicen Tao, Huanyang Chen
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Comptes Rendus. Mathématique, 2021 The analysis of Cartesian Perfectly Matched Layers (PMLs) in the context of time-domain electromagnetic wave propagation in a 3D unbounded anisotropic homogeneous medium modelled by a diagonal dielectric tensor is presented.
Bécache, Éliane +3 more
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Partition of Unity Finite Element Method applied to exterior problems with Perfectly Matched Layers
Acta Acustica, 2020 The Partition of Unity Finite Element Method (PUFEM) is now a well established and efficient method used in computational acoustics to tackle short-wave problems.
Langlois Christophe +3 more
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Modelling of open photoacoustic resonators
Photoacoustics, 2020 Photoacoustic spectroscopy employs acoustic resonators for signal amplification. Resonators are usually closed, however, in some applications, open resonators are preferred. The opening deteriorates the photoacoustic signal hence reducing the sensitivity
Said Ali Said El-Busaidy +3 more
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Second-order scalar wave field modeling with a first-order perfectly matched layer [PDF]
Solid Earth, 2018 The forward modeling of a scalar wave equation plays an important role in the numerical geophysical computations. The finite-difference algorithm in the form of a second-order wave equation is one of the commonly used forward numerical algorithms ...
X. Zhang, D. Zhang, Q. Chen, Y. Yang
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Applied Sciences, 2023 Trapped modes that exist in the waveguide have different engineering applications. Excited acoustic modes are due to the interaction between acoustic and flow fields.
Congcong Ma, Pingping Niu, Xinyu An
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