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Volume 38, Issue 4
A Class of Second-Order Energy-Stable Schemes for the Cahn-Hilliard Equation and Their Linear Iteration Algorithm

Xiaohan Zhu, Yuezheng Gong & Yushun Wang

Commun. Comput. Phys., 38 (2025), pp. 1210-1236.

Published online: 2025-09

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  • Abstract

In this paper, we study a class of second-order accurate and energy-stable numerical schemes for the Cahn-Hilliard model. These schemes are constructed by combining the Crank-Nicolson approximation with three stabilization terms in time and employing the Fourier pseudo-spectral method in space. This class of schemes includes the second-order schemes presented in previous works while providing new schemes by introducing stabilization terms. To solve these schemes with strong nonlinearity efficiently, we propose a linear iteration algorithm and prove that the algorithm satisfies a contraction mapping property in the discrete $l^4$ norm. Furthermore, we establish a comprehensive theoretical analysis, including unique solvability, mass conservation, energy stability, and convergence based on a uniform-in-time $l^∞$ bound of the numerical solution for the proposed second-order scheme. Some numerical simulation results with many different sets of stabilization parameters are presented to conclude the paper.

  • AMS Subject Headings

35Q99, 65M06, 65M12, 74A50

  • Copyright

COPYRIGHT: © Global Science Press

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@Article{CiCP-38-1210, author = {Zhu , XiaohanGong , Yuezheng and Wang , Yushun}, title = {A Class of Second-Order Energy-Stable Schemes for the Cahn-Hilliard Equation and Their Linear Iteration Algorithm}, journal = {Communications in Computational Physics}, year = {2025}, volume = {38}, number = {4}, pages = {1210--1236}, abstract = {

In this paper, we study a class of second-order accurate and energy-stable numerical schemes for the Cahn-Hilliard model. These schemes are constructed by combining the Crank-Nicolson approximation with three stabilization terms in time and employing the Fourier pseudo-spectral method in space. This class of schemes includes the second-order schemes presented in previous works while providing new schemes by introducing stabilization terms. To solve these schemes with strong nonlinearity efficiently, we propose a linear iteration algorithm and prove that the algorithm satisfies a contraction mapping property in the discrete $l^4$ norm. Furthermore, we establish a comprehensive theoretical analysis, including unique solvability, mass conservation, energy stability, and convergence based on a uniform-in-time $l^∞$ bound of the numerical solution for the proposed second-order scheme. Some numerical simulation results with many different sets of stabilization parameters are presented to conclude the paper.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2024-0016}, url = {http://global-sci.org/intro/article_detail/cicp/24357.html} }
TY - JOUR T1 - A Class of Second-Order Energy-Stable Schemes for the Cahn-Hilliard Equation and Their Linear Iteration Algorithm AU - Zhu , Xiaohan AU - Gong , Yuezheng AU - Wang , Yushun JO - Communications in Computational Physics VL - 4 SP - 1210 EP - 1236 PY - 2025 DA - 2025/09 SN - 38 DO - http://doi.org/10.4208/cicp.OA-2024-0016 UR - https://global-sci.org/intro/article_detail/cicp/24357.html KW - Cahn-Hilliard equation, second-order energy-stable scheme, Fourier pseudo-spectral method, energy stability, linear iteration. AB -

In this paper, we study a class of second-order accurate and energy-stable numerical schemes for the Cahn-Hilliard model. These schemes are constructed by combining the Crank-Nicolson approximation with three stabilization terms in time and employing the Fourier pseudo-spectral method in space. This class of schemes includes the second-order schemes presented in previous works while providing new schemes by introducing stabilization terms. To solve these schemes with strong nonlinearity efficiently, we propose a linear iteration algorithm and prove that the algorithm satisfies a contraction mapping property in the discrete $l^4$ norm. Furthermore, we establish a comprehensive theoretical analysis, including unique solvability, mass conservation, energy stability, and convergence based on a uniform-in-time $l^∞$ bound of the numerical solution for the proposed second-order scheme. Some numerical simulation results with many different sets of stabilization parameters are presented to conclude the paper.

Zhu , XiaohanGong , Yuezheng and Wang , Yushun. (2025). A Class of Second-Order Energy-Stable Schemes for the Cahn-Hilliard Equation and Their Linear Iteration Algorithm. Communications in Computational Physics. 38 (4). 1210-1236. doi:10.4208/cicp.OA-2024-0016
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