An implicit–explicit second-order BDF numerical scheme with variable steps for gradient flows

D Hou, Z Qiao - Journal of Scientific Computing, 2023 - Springer
In this paper, we propose and analyze an efficient implicit–explicit second-order backward
differentiation formulation (BDF2) scheme with variable time steps for gradient flow problems …

Stability of variable-step BDF2 and BDF3 methods

Z Li, H Liao - SIAM Journal on Numerical Analysis, 2022 - SIAM
We prove that the two-step backward differentiation formula (BDF) method is stable on
arbitrary time grids; while the variable-step three-step backward differentiation formula …

A linear second-order maximum bound principle-preserving BDF scheme for the Allen-Cahn equation with a general mobility

D Hou, L Ju, Z Qiao - Mathematics of Computation, 2023 - ams.org
In this paper, we propose and analyze a linear second-order numerical method for solving
the Allen-Cahn equation with a general mobility. The proposed fully-discrete scheme is …

Asymptotically compatible energy of variable-step fractional BDF2 scheme for the time-fractional Cahn–Hilliard model

H Liao, N Liu, X Zhao - IMA Journal of Numerical Analysis, 2024 - academic.oup.com
A novel discrete gradient structure of the variable-step fractional BDF2 formula
approximating the Caputo fractional derivative of order is constructed by a local-nonlocal …

Asymptotically compatible energy of variable-step fractional BDF2 formula for time-fractional Cahn-Hilliard model

H Liao, N Liu, X Zhao - arXiv preprint arXiv:2210.12514, 2022 - arxiv.org
A new discrete energy dissipation law of the variable-step fractional BDF2 (second-order
backward differentiation formula) scheme is established for time-fractional Cahn-Hilliard …

Unconditionally energy stable high-order BDF schemes for the molecular beam epitaxial model without slope selection

Y Kang, J Wang, Y Yang - Applied Numerical Mathematics, 2024 - Elsevier
In this paper, we consider a class of k-order (3≤ k≤ 5) backward differentiation formulas
(BDF-k) for the molecular beam epitaxial (MBE) model without slope selection. Convex …

An adaptive time-stepping method for the binary fluid-surfactant phase field model on evolving surfaces

S Huang, X Xiao, X Feng - Journal of Scientific Computing, 2023 - Springer
In this paper, the binary fluid-surfactant phase field model on evolving surfaces is presented
and numerically studied for interfacial sciences. Based on the evolving surface finite element …

Analysis of variable-time-step BDF2 combined with the fast two-grid finite element algorithm for the FitzHugh-Nagumo model

X Liu, N Liu, Y Liu, H Li - Computers & Mathematics with Applications, 2024 - Elsevier
In this article, a fast numerical method is developed for solving the FitzHugh-Nagumo (FHN)
model by combining two-grid finite element (TGFE) algorithm in space with a linearized …

Stability and convergence of the variable-step time filtered backward Euler scheme for parabolic equations

H Liao, T Tang, T Zhou - BIT Numerical Mathematics, 2023 - Springer
This work is concerned with numerical analysis of the variable-step time filtered backward
Euler scheme (see eg DeCaria in SIAM J Sci Comput 43 (3): A2130–A2160, 2021) for linear …

Structure-preserving weighted BDF2 methods for anisotropic Cahn–Hilliard model: Uniform/variable-time-steps

M Li, J Bi, N Wang - Communications in Nonlinear Science and Numerical …, 2025 - Elsevier
In this paper, we innovatively develop uniform/variable-time-step weighted and shifted BDF2
(WSBDF2) methods for the anisotropic Cahn–Hilliard (CH) model, combining the scalar …