Corner treatments for high-order local absorbing boundary conditions in high-frequency acoustic scattering

A Modave, C Geuzaine, X Antoine - Journal of Computational Physics, 2020 - Elsevier
This paper deals with the design and validation of accurate local absorbing boundary
conditions set on convex polygonal and polyhedral computational domains for the finite …

Schwarz methods by domain truncation

MJ Gander, H Zhang - Acta Numerica, 2022 - search.proquest.com
Schwarz methods use a decomposition of the computational domain into subdomains and
need to impose boundary conditions on the subdomain boundaries. In domain truncation …

A non-overlapping domain decomposition method with high-order transmission conditions and cross-point treatment for Helmholtz problems

A Modave, A Royer, X Antoine, C Geuzaine - Computer Methods in Applied …, 2020 - Elsevier
A non-overlapping domain decomposition method (DDM) is proposed for the parallel finite-
element solution of large-scale time-harmonic wave problems. It is well-known that the …

A non-overlapping domain decomposition method with perfectly matched layer transmission conditions for the Helmholtz equation

A Royer, C Geuzaine, E Béchet, A Modave - Computer Methods in Applied …, 2022 - Elsevier
It is well-known that the convergence rate of non-overlapping domain decomposition
methods (DDMs) applied to the parallel finite-element solution of large-scale time-harmonic …

L-Sweeps: A scalable, parallel preconditioner for the high-frequency Helmholtz equation

M Taus, L Zepeda-Núñez, RJ Hewett… - Journal of Computational …, 2020 - Elsevier
We present the first fast solver for the high-frequency Helmholtz equation that scales
optimally in parallel for a single right-hand side. The L-sweeps approach achieves this …

Multidirectional sweeping preconditioners with non-overlapping checkerboard domain decomposition for Helmholtz problems

R Dai, A Modave, JF Remacle, C Geuzaine - Journal of Computational …, 2022 - Elsevier
This paper explores a family of generalized sweeping preconditioners for Helmholtz
problems with non-overlapping checkerboard partition of the computational domain. The …

On perfectly matched layers for discontinuous Petrov–Galerkin methods

A Vaziri Astaneh, B Keith, L Demkowicz - Computational Mechanics, 2019 - Springer
In this article, several discontinuous Petrov–Galerkin (DPG) methods with perfectly matched
layers (PMLs) are derived along with their quasi-optimal graph test norms. Ultimately, two …

The method of polarized traces for the 3D Helmholtz equation

L Zepeda-Núnez, A Scheuer, RJ Hewett, L Demanet - Geophysics, 2019 - library.seg.org
We have developed a fast solver for the 3D Helmholtz equation, in heterogeneous, constant
density, acoustic media, in the high-frequency regime. The solver is based on the method of …

[PDF][PDF] An optimized Schwarz domain decomposition method with cross-point treatment for time-harmonic acoustic scattering

A Modave, A Royer, X Antoine, C Geuzaine - HAL-02432422, 2020 - researchgate.net
The parallel finite-element solution of large-scale time-harmonic wave problems is
addressed with a non-overlapping optimized Schwarz domain decomposition method …

[PDF][PDF] On the Forward and Inverse Computational Wave Propagation Problems.

A Vaziriastaneh - 2016 - repository.lib.ncsu.edu
VAZIRI ASTANEH, ALI. On the Forward and Inverse Computational Wave Propagation Problems.
(Under the direction of Dr. Mu Page 1 ABSTRACT VAZIRI ASTANEH, ALI. On the Forward and …