Exponential integrators

M Hochbruck, A Ostermann - Acta Numerica, 2010 - cambridge.org
In this paper we consider the construction, analysis, implementation and application of
exponential integrators. The focus will be on two types of stiff problems. The first one is …

Residual and Restarting in Krylov Subspace Evaluation of the Function

MA Botchev, L Knizhnerman, EE Tyrtyshnikov - SIAM Journal on Scientific …, 2021 - SIAM
An efficient Krylov subspace algorithm for computing actions of the φ matrix function for large
matrices is proposed. This matrix function is widely used in exponential time integration …

The spatial fourth-order energy-conserved S-FDTD scheme for Maxwell's equations

D Liang, Q Yuan - Journal of Computational Physics, 2013 - Elsevier
In this paper we develop a new spatial fourth-order energy-conserved splitting finite-
difference time-domain method for Maxwell's equations. Based on the staggered grids, the …

Stable and efficient numerical schemes for two-dimensional Maxwell equations in lossy medium

L Kong, Y Hong, N Tian, W Zhou - Journal of Computational Physics, 2019 - Elsevier
In this paper, some stable and efficient numerical methods are developed for two-
dimensional Maxwell equations. To avoid solving large scale algebraic equations, we use …

An energy-conserving Fourier particle-in-cell method with asymptotic-preserving preconditioner for Vlasov-Ampère system with exact curl-free constraint

Z Li, Z Xu, Z Yang - Journal of Computational Physics, 2023 - Elsevier
We present an efficient and accurate energy-conserving implicit particle-in-cell (PIC)
algorithm for the electrostatic Vlasov system, with particular emphasis on its high robustness …

A high-efficient splitting step reduced-dimension pure meshless method for transient 2D/3D Maxwell's equations in complex irregular domain

Q Shi, J Zhao, R Jiang, T Jiang - Engineering Analysis with Boundary …, 2022 - Elsevier
In this work, a high-efficient and accurate pure meshless method is designated as splitting
step reduced-dimension finite pointset method, which is first proposed to solve the time …

Operator splittings and spatial approximations for evolution equations

A Bátkai, P Csomós, G Nickel - Journal of Evolution Equations, 2009 - Springer
The convergence of various operator splitting procedures, such as the sequential, the Strang
and the weighted splitting, is investigated in the presence of a spatial approximation. To this …

A residual concept for Krylov subspace evaluation of the matrix function

MA Botchev, LA Knizhnerman… - arXiv preprint arXiv …, 2020 - arxiv.org
An efficient Krylov subspace algorithm for computing actions of the $\varphi $ matrix function
for large matrices is proposed. This matrix function is widely used in exponential time …

[HTML][HTML] Energy-conserved splitting spectral methods for two dimensional Maxwell's equations

F Zeng, H Ma, D Liang - Journal of Computational and Applied …, 2014 - Elsevier
In this paper, the energy-conserved splitting Legendre Galerkin method and energy-
conserved splitting Legendre collocation method for Maxwell's equations in two dimensions …

[HTML][HTML] Improvement of accuracy of multi-scale models of Li-ion batteries by applying operator splitting techniques

Z Farkas, I Faragó, A Kriston, A Pfrang - Journal of Computational and …, 2017 - Elsevier
In this work operator splitting techniques have been applied successfully to improve the
accuracy of multi-scale Lithium-ion (Li-ion) battery models. A slightly simplified Li-ion battery …