L-Sweeps: A scalable, parallel preconditioner for the high-frequency Helmholtz equation
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 …
optimally in parallel for a single right-hand side. The L-sweeps approach achieves this …
Wavenumber-explicit stability and convergence analysis of hp finite element discretizations of Helmholtz problems in piecewise smooth media
M Bernkopf, T Chaumont-Frelet, JM Melenk - arXiv preprint arXiv …, 2022 - arxiv.org
We present a wavenumber-explicit convergence analysis of the hp finite element method
applied to a class of heterogeneous Helmholtz problems with piecewise analytic coefficients …
applied to a class of heterogeneous Helmholtz problems with piecewise analytic coefficients …
Phase-informed discontinuous Galerkin method for extremely high-frequency wave modeling
H Feng, J Huang, C Li, K Liu, YY Wang… - … on Antennas and …, 2024 - ieeexplore.ieee.org
Two long-standing problems exist in the high-frequency electromagnetic scattering analysis:
1) full-wave methods suffer a geometric increase in computational costs, along with the …
1) full-wave methods suffer a geometric increase in computational costs, along with the …
On the derivation of guaranteed and p-robust a posteriori error estimates for the Helmholtz equation
T Chaumont-Frelet, A Ern, M Vohralík - Numerische Mathematik, 2021 - Springer
We propose a novel a posteriori error estimator for conforming finite element discretizations
of two-and three-dimensional Helmholtz problems. The estimator is based on an …
of two-and three-dimensional Helmholtz problems. The estimator is based on an …
An Edge Multiscale Interior Penalty Discontinuous Galerkin method for heterogeneous Helmholtz problems with large varying wavenumber
Abstract We propose an Edge Multiscale Finite Element Method (EMsFEM) based on an
Interior Penalty Discontinuous Galerkin (IPDG) formulation for the heterogeneous Helmholtz …
Interior Penalty Discontinuous Galerkin (IPDG) formulation for the heterogeneous Helmholtz …
The (,)-HDG Method for the Helmholtz Equation with Large Wave Number
B Zhu, H Wu - SIAM Journal on Numerical Analysis, 2024 - SIAM
In this paper, we analyze a hybridizable discontinuous Galerkin method for the Helmholtz
equation with large wave number, which uses piecewise polynomials of degree of to …
equation with large wave number, which uses piecewise polynomials of degree of to …
Wavenumber-explicit stability and convergence analysis of ℎ𝑝 finite element discretizations of Helmholtz problems in piecewise smooth media
M Bernkopf, T Chaumont-Frelet, J Melenk - Mathematics of Computation, 2024 - ams.org
We present a wavenumber-explicit convergence analysis of the $ hp $ Finite Element
Method applied to a class of heterogeneous Helmholtz problems with piecewise analytic …
Method applied to a class of heterogeneous Helmholtz problems with piecewise analytic …
[HTML][HTML] Adaptive finite element method for the sound wave problems in two kinds of media
In this paper, we consider the adaptive finite element method for sound wave propagation
problems in two kinds of media, which are the linear anisotropic acoustic materials (the …
problems in two kinds of media, which are the linear anisotropic acoustic materials (the …
Frequency-explicit approximability estimates for time-harmonic Maxwell's equations
T Chaumont-Frelet, P Vega - Calcolo, 2022 - Springer
We consider time-harmonic Maxwell's equations set in a heterogeneous medium with
perfectly conducting boundary conditions. Given a divergence-free right-hand side lying in L …
perfectly conducting boundary conditions. Given a divergence-free right-hand side lying in L …