Numerical-asymptotic boundary integral methods in high-frequency acoustic scattering

SN Chandler-Wilde, IG Graham, S Langdon… - Acta …, 2012 - cambridge.org
In this article we describe recent progress on the design, analysis and implementation of
hybrid numerical-asymptotic boundary integral methods for boundary value problems for the …

Frames and numerical approximation

B Adcock, D Huybrechs - Siam Review, 2019 - SIAM
Functions of one or more variables are usually approximated with a basis: a complete,
linearly independent system of functions that spans a suitable function space. The topic of …

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 …

High-frequency behaviour of corner singularities in Helmholtz problems

T Chaumont-Frelet, S Nicaise - ESAIM: Mathematical Modelling …, 2018 - esaim-m2an.org
We analyze the singular behaviour of the Helmholtz equation set in a non-convex polygon.
Classically, the solution of the problem is split into a regular part and one singular function …

High-frequency bounds for the Helmholtz equation under parabolic trap** and applications in numerical analysis

SN Chandler-Wilde, EA Spence, A Gibbs… - SIAM Journal on …, 2020 - SIAM
This paper is concerned with resolvent estimates on the real axis for the Helmholtz equation
posed in the exterior of a bounded obstacle with Dirichlet boundary conditions when the …

A frequency-independent boundary element method for scattering by two-dimensional screens and apertures

DP Hewett, S Langdon… - IMA Journal of …, 2015 - academic.oup.com
We propose and analyse a hybrid numerical–asymptotic boundary element method (BEM)
for time-harmonic scattering of an incident plane wave by an arbitrary collinear array of …

Wavenumber-explicit analysis for the Helmholtz h-BEM: error estimates and iteration counts for the Dirichlet problem

J Galkowski, EH Müller, EA Spence - Numerische Mathematik, 2019 - Springer
We consider solving the exterior Dirichlet problem for the Helmholtz equation with the h-
version of the boundary element method (BEM) using the standard second-kind combined …

A sharp relative-error bound for the Helmholtz h-FEM at high frequency

D Lafontaine, EA Spence, J Wunsch - Numerische Mathematik, 2022 - Springer
For the h-finite-element method (h-FEM) applied to the Helmholtz equation, the question of
how quickly the meshwidth h must decrease with the frequency k to maintain accuracy as k …

When is the error in the -BEM for solving the Helmholtz equation bounded independently of ?

IG Graham, M Löhndorf, JM Melenk… - BIT Numerical …, 2015 - Springer
We consider solving the sound-soft scattering problem for the Helmholtz equation with the h
h-version of the boundary element method using the standard second-kind combined-field …

A High Frequency Boundary Element Method for Scattering by Convex Polygons

DP Hewett, S Langdon, JM Melenk - SIAM Journal on Numerical Analysis, 2013 - SIAM
In this paper we propose and analyze a hybrid hp boundary element method for the solution
of problems of high frequency acoustic scattering by sound-soft convex polygons, in which …