Structure-preserving oscillation-eliminating discontinuous Galerkin schemes for ideal MHD equations: Locally divergence-free and positivity-preserving

M Liu, K Wu - Journal of Computational Physics, 2025 - Elsevier
Numerically simulating magnetohydrodynamics (MHD) poses notable challenges, including
the suppression of spurious oscillations near discontinuities (eg, shocks) and preservation of …

Stable finite element methods preserving∇· B= 0 exactly for MHD models

K Hu, Y Ma, J Xu - Numerische Mathematik, 2017 - Springer
This paper is devoted to the design and analysis of some structure-preserving finite element
schemes for the magnetohydrodynamics (MHD) system. The main feature of the method is …

Provably positive high-order schemes for ideal magnetohydrodynamics: analysis on general meshes

K Wu, CW Shu - Numerische Mathematik, 2019 - Springer
This paper proposes and analyzes arbitrarily high-order discontinuous Galerkin (DG) and
finite volume methods which provably preserve the positivity of density and pressure for the …

Provably positive central discontinuous Galerkin schemes via geometric quasilinearization for ideal MHD equations

K Wu, H Jiang, CW Shu - SIAM Journal on Numerical Analysis, 2023 - SIAM
In the numerical simulation of ideal magnetohydrodynamics (MHD), kee** the pressure
and density always positive is essential for both physical considerations and numerical …

A provably positive discontinuous Galerkin method for multidimensional ideal magnetohydrodynamics

K Wu, CW Shu - SIAM Journal on Scientific Computing, 2018 - SIAM
The density and pressure are positive physical quantities in magnetohydrodynamics (MHD).
Design of provably positivity-preserving (PP) numerical schemes for ideal compressible …

Positivity-preserving analysis of numerical schemes for ideal magnetohydrodynamics

K Wu - SIAM Journal on Numerical Analysis, 2018 - SIAM
Numerical schemes provably preserving the positivity of density and pressure are highly
desirable for ideal magnetohydrodynamics (MHD), but the rigorous positivity-preserving …

Arbitrary order exactly divergence-free central discontinuous Galerkin methods for ideal MHD equations

F Li, L Xu - Journal of Computational Physics, 2012 - Elsevier
Ideal magnetohydrodynamic (MHD) equations consist of a set of nonlinear hyperbolic
conservation laws, with a divergence-free constraint on the magnetic field. Neglecting this …

Positivity-preserving DG and central DG methods for ideal MHD equations

Y Cheng, F Li, J Qiu, L Xu - Journal of Computational Physics, 2013 - Elsevier
Ideal MHD equations arise in many applications such as astrophysical plasmas and space
physics, and they consist of a system of nonlinear hyperbolic conservation laws. The exact …

GQL-Based Bound-Preserving and Locally Divergence-Free Central Discontinuous Galerkin Schemes for Relativistic Magnetohydrodynamics

S Ding, K Wu - Journal of Computational Physics, 2024 - Elsevier
This paper develops novel and robust central discontinuous Galerkin (CDG) schemes of
arbitrarily high-order accuracy for special relativistic magnetohydrodynamics (RMHD) with a …

High-order magnetohydrodynamics for astrophysics with an adaptive mesh refinement discontinuous Galerkin scheme

T Guillet, R Pakmor, V Springel… - Monthly Notices of …, 2019 - academic.oup.com
Modern astrophysical simulations aim to accurately model an ever-growing array of physical
processes, including the interaction of fluids with magnetic fields, under increasingly …