[HTML][HTML] Continuum and discrete initial-boundary value problems and Einstein's field equations

O Sarbach, M Tiglio - Living reviews in relativity, 2012 - Springer
Many evolution problems in physics are described by partial differential equations on an
infinite domain; therefore, one is interested in the solutions to such problems for a given …

SpECTRE: a task-based discontinuous Galerkin code for relativistic astrophysics

LE Kidder, SE Field, F Foucart, E Schnetter… - Journal of …, 2017 - Elsevier
We introduce a new relativistic astrophysics code, SpECTRE, that combines a discontinuous
Galerkin method with a task-based parallelism model. SpECTRE's goal is to achieve more …

[HTML][HTML] A well-balanced discontinuous Galerkin method for the first–order Z4 formulation of the Einstein–Euler system

M Dumbser, O Zanotti, E Gaburro, I Peshkov - Journal of Computational …, 2024 - Elsevier
In this paper we develop a new well-balanced discontinuous Galerkin (DG) finite element
scheme with subcell finite volume (FV) limiter for the numerical solution of the Einstein–Euler …

Conformal and covariant Z4 formulation of the Einstein equations: strongly hyperbolic first-order reduction and solution with discontinuous Galerkin schemes

M Dumbser, F Guercilena, S Köppel, L Rezzolla… - Physical Review D, 2018 - APS
We present a strongly hyperbolic first-order formulation of the Einstein equations based on
the conformal and covariant Z4 system (CCZ4) with constraint-violation damping, which we …

On GLM curl cleaning for a first order reduction of the CCZ4 formulation of the Einstein field equations

M Dumbser, F Fambri, E Gaburro, A Reinarz - Journal of Computational …, 2020 - Elsevier
In this paper we propose an extension of the generalized Lagrangian multiplier method
(GLM) of Munz et al.[52],[30], which was originally conceived for the numerical solution of the …

A structure-preserving finite volume scheme for a hyperbolic reformulation of the Navier–Stokes–Korteweg equations

F Dhaouadi, M Dumbser - Mathematics, 2023 - mdpi.com
In this paper, we present a new explicit second-order accurate structure-preserving finite
volume scheme for the first-order hyperbolic reformulation of the Navier–Stokes–Korteweg …

Solving 3D relativistic hydrodynamical problems with weighted essentially nonoscillatory discontinuous Galerkin methods

M Bugner, T Dietrich, S Bernuzzi, A Weyhausen… - Physical Review D, 2016 - APS
Discontinuous Galerkin (DG) methods coupled to weighted essentially nonoscillatory
(WENO) algorithms allow high order convergence for smooth problems and for the …

Formulation of discontinuous Galerkin methods for relativistic astrophysics

SA Teukolsky - Journal of Computational Physics, 2016 - Elsevier
The DG algorithm is a powerful method for solving pdes, especially for evolution equations
in conservation form. Since the algorithm involves integration over volume elements, it is not …

New first-order formulation of the Einstein equations exploiting analogies with electrodynamics

H Olivares, IM Peshkov, ER Most, FM Guercilena… - Physical Review D, 2022 - APS
The Einstein and Maxwell equations are both systems of hyperbolic equations which need
to satisfy a set of elliptic constraints throughout evolution. However, while electrodynamics …

Simulating magnetized neutron stars with discontinuous Galerkin methods

N Deppe, F Hébert, LE Kidder, W Throwe… - Physical Review D, 2022 - APS
Discontinuous Galerkin methods are popular because they can achieve high order where
the solution is smooth, because they can capture shocks while needing only nearest …