Improving the accuracy and consistency of the scalar auxiliary variable (SAV) method with relaxation

M Jiang, Z Zhang, J Zhao - Journal of Computational Physics, 2022 - Elsevier
The scalar auxiliary variable (SAV) method was introduced by Shen et al. in [36] and has
been broadly used to solve thermodynamically consistent PDE problems. By utilizing scalar …

Linear relaxation method with regularized energy reformulation for phase field models

J Zhang, X Guo, M Jiang, T Zhou, J Zhao - Journal of Computational …, 2024 - Elsevier
In this paper, we establish a novel linear relaxation method with regularized energy
reformulation for phase field models, which we name the RRER method. We employ the …

A novel second-order linear scheme for the Cahn-Hilliard-Navier-Stokes equations

L Chen, J Zhao - Journal of Computational Physics, 2020 - Elsevier
In this paper, we consider the Cahn-Hilliard equation coupled with the incompressible
Navier-Stokes equation, usually known as the Cahn-Hilliard-Navier-Stokes (CHNS) system …

A non-uniform time-stepping convex splitting scheme for the time-fractional Cahn–Hilliard equation

J Zhang, J Zhao, JR Wang - Computers & Mathematics with Applications, 2020 - Elsevier
In this paper, a non-uniform time-stepping convex-splitting numerical algorithm for solving
the widely used time-fractional Cahn–Hilliard equation is introduced. The proposed …

On novel linear schemes for the Cahn–Hilliard equation based on an improved invariant energy quadratization approach

R Chen, S Gu - Journal of Computational and Applied Mathematics, 2022 - Elsevier
In this paper we present two fully discrete time-marching schemes including the first order
and the second order schemes for the Cahn–Hilliard equation. The proposed method is …

A high-order energy stable method for the MBE models with slope selection by using Lagrange multiplier approach

N Wang, B Jiang, M Li - Applied Mathematics Letters, 2025 - Elsevier
In this work, we develop high-order convex splitting implicit–explicit Runge–Kutta methods
for Molecular Beam Epitaxy (MBE) model with slope selection, which plays key roles in …

[PDF][PDF] An energy stable filtered backward Euler scheme for the MBE equation with slope selection

J Wang, HL Liao, Y Zhao - Numer. Math. Theor. Method Appl., 2023 - global-sci.com
As a promising strategy to adjust the order in the variable-order BDF algorithm, a time
filtered backward Euler scheme is investigated for the molecular beam epitaxial equation …

Numerical Approximations of Diblock Copolymer Model Using a Modified Leapfrog Time-Marching Scheme

L Chen, Y Ma, B Ren, G Zhang - Computation, 2023 - mdpi.com
An efficient modified leapfrog time-marching scheme for the diblock copolymer model is
investigated in this paper. The proposed scheme offers three main advantages. Firstly, it is …

A novel high-order linearly implicit and energy-stable additive Runge-Kutta methods for gradient flow models

X Gu, W Cai, Y Wang - arXiv preprint arXiv:2307.03905, 2023 - arxiv.org
This paper introduces a novel paradigm for constructing linearly implicit and high-order
unconditionally energy-stable schemes for general gradient flows, utilizing the scalar …

Discovering phase field models from image data with the pseudo-spectral physics informed neural networks

J Zhao - Communications on Applied Mathematics and …, 2021 - Springer
In this paper, we introduce a new deep learning framework for discovering the phase-field
models from existing image data. The new framework embraces the approximation power of …