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An energy-stable second-order finite element method for the Swift–Hohenberg equation

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Abstract

In this paper, we design and analyze an unconditionally energy-stable, second-order-in-time, finite element scheme for the Swift–Hohenberg equation. We prove rigorously that our scheme is unconditionally uniquely solvable and unconditionally energy stable. We also give the boundedness of discrete phase variable for any time and space mesh sizes. Numerical tests are presented to validate the accuracy and energy stability of our scheme.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (NSFC) (No. 11971378).

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Correspondence to Yanren Hou.

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Communicated by Frederic Valentin.

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Subsidized by National Natural Science Foundation of China (NSFC) (Grant No.11971378).

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Qi, L., Hou, Y. An energy-stable second-order finite element method for the Swift–Hohenberg equation. Comp. Appl. Math. 42, 5 (2023). https://doi.org/10.1007/s40314-022-02144-2

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  • DOI: https://doi.org/10.1007/s40314-022-02144-2

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