An augmented Lagrangian preconditioner for the magnetohydrodynamics equations at high Reynolds and coupling numbers

F Laakmann, PE Farrell, L Mitchell - SIAM Journal on Scientific Computing, 2022 - SIAM
The magnetohydrodynamics (MHD) equations are generally known to be difficult to solve
numerically, due to their highly nonlinear structure and the strong coupling between the …

The virtual element method for the 3D resistive magnetohydrodynamic model

L Beirao da Veiga, F Dassi, G Manzini… - … Models and Methods in …, 2023 - World Scientific
We present a four-field virtual element discretization for the time-dependent resistive
magnetohydrodynamics equations in three space dimensions, focusing on the semi-discrete …

Monolithic multigrid for implicit Runge–Kutta discretizations of incompressible fluid flow

R Abu-Labdeh, S MacLachlan, PE Farrell - Journal of Computational …, 2023 - Elsevier
Most research on preconditioners for time-dependent PDEs has focused on implicit multi-
step or diagonally-implicit multi-stage temporal discretizations. In this paper, we consider …

Monolithic multigrid methods for magnetohydrodynamics

JH Adler, TR Benson, EC Cyr, PE Farrell… - SIAM Journal on …, 2021 - SIAM
The magnetohydrodynamics equations model a wide range of plasma physics applications
and are characterized by a nonlinear system of partial differential equations that strongly …

Structure-preserving and helicity-conserving finite element approximations and preconditioning for the Hall MHD equations

F Laakmann, K Hu, PE Farrell - Journal of Computational Physics, 2023 - Elsevier
We develop structure-preserving finite element methods for the incompressible, resistive
Hall magnetohydrodynamics (MHD) equations. These equations incorporate the Hall current …

A decoupled, unconditionally energy-stable and structure-preserving finite element scheme for the incompressible MHD equations with magnetic-electric formulation

X Zhang, H Su - Computers & Mathematics with Applications, 2023 - Elsevier
In this paper, we propose a decoupled, unconditionally energy stable and structure-
preserving finite element scheme for the incompressible magnetohydrodynamic (MHD) …

Two‐level methods based on the Arrow–Hurwicz iteration for the steady incompressible magnetohydrodynamic system

B Du, J Huang, MA Al Mahbub… - Numerical Methods for …, 2023 - Wiley Online Library
We consider the two‐level methods based on Arrow–Hurwicz (A‐H) iteration for solving the
stationary incompressible magnetohydrodynamics problem. The methods carry out some A …

[HTML][HTML] Bifurcation analysis of a two-dimensional magnetic Rayleigh–Bénard problem

F Laakmann, N Boullé - Physica D: Nonlinear Phenomena, 2024 - Elsevier
We perform a bifurcation analysis of a two-dimensional magnetic Rayleigh–Bénard problem
using a numerical technique called deflated continuation. Our aim is to study the influence of …

[HTML][HTML] Analysis of a semi-implicit structure-preserving finite element method for the nonstationary incompressible magnetohydrodynamics equations

W Qiu, K Shi - Computers & Mathematics with Applications, 2020 - Elsevier
We revise the structure-preserving finite element method in [K. Hu, Y. MA and J. Xu.(2017)
Stable finite element methods preserving∇⋅ B= 0 exactly for MHD models. Numer. Math …

On convergence of numerical solutions for the compressible MHD system with exactly divergence-free magnetic field

Y Li, B She - SIAM Journal on Numerical Analysis, 2022 - SIAM
We study a general convergence theory for the numerical solutions of compressible viscous
and electrically conducting fluids with a focus on numerical schemes that preserve the …