Convergence of linear and nonlinear Neumann–Neumann method for the Cahn–Hilliard equation

In this paper, we propose and analyze a non-overlapping substructuring type algorithm for the Cahn–Hilliard equation. Being a nonlinear equation, it is of great importance to develop a robust numerical method for investigating the solution behaviour of the CH equation. We present the formulation of...

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Bibliographic Details
Published in:Japan journal of industrial and applied mathematics Vol. 41; no. 1; pp. 211 - 232
Main Author: Garai, Gobinda
Format: Journal Article
Language:English
Published: Tokyo Springer Japan 01.01.2024
Springer Nature B.V
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ISSN:0916-7005, 1868-937X
Online Access:Get full text
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Summary:In this paper, we propose and analyze a non-overlapping substructuring type algorithm for the Cahn–Hilliard equation. Being a nonlinear equation, it is of great importance to develop a robust numerical method for investigating the solution behaviour of the CH equation. We present the formulation of the Neumann–Neumann method applied to the CH equation and study its convergence behaviour in one and two spatial dimension for two subdomains and also extend the method for logarithmic nonlinearity. We also present the nonlinear NN method for the CH equation. We illustrate the theoretical results by providing numerical examples.
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ISSN:0916-7005
1868-937X
DOI:10.1007/s13160-023-00600-y