Structure-preserving weighted BDF2 methods for Anisotropic Cahn-Hilliard model: uniform/variable-time-steps
<|reference_start|>Structure-preserving weighted BDF2 methods for Anisotropic Cahn-Hilliard model: uniform/variable-time-steps: 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 auxiliary variable (SAV) approach with two types of stabilized techniques. Using the concept of $G$-stability, the uniform-time-step WSBDF2 method is theoretically proved to be energy-stable. Due to the inapplicability of the relevant G-stability properties, another technique is adopted in this work to demonstrate the energy stability of the variable-time-step WSBDF2 method. In addition, the two numerical schemes are all mass-conservative.Finally, numerous numerical simulations are presented to demonstrate the stability and accuracy of these schemes.<|reference_end|>
@article{li2024structure-preserving,
    title={Structure-preserving weighted BDF2 methods for Anisotropic Cahn-Hilliard
  model: uniform/variable-time-steps},
    author={Meng Li, Jingjiang Bi and Nan Wang},
    journal={arXiv preprint arXiv:2404.13259},
    year={2024},
    archivePrefix={arXiv},
    eprint={2404.13259},
    primaryClass={math.NA cs.NA}
}