@Article{CiCP-34-713, author = {Bailo , RafaelCarrillo , José A.Kalliadasis , Serafim and Perez , Sergio P.}, title = {Unconditional Bound-Preserving and Energy-Dissipating Finite-Volume Schemes for the Cahn-Hilliard Equation}, journal = {Communications in Computational Physics}, year = {2023}, volume = {34}, number = {3}, pages = {713--748}, abstract = {

We propose finite-volume schemes for the Cahn-Hilliard equation which unconditionally and discretely preserve the boundedness of the phase field and the dissipation of the free energy. Our numerical framework is applicable to a variety of free-energy potentials, including Ginzburg-Landau and Flory-Huggins, to general wetting boundary conditions, and to degenerate mobilities. Its central thrust is the upwind methodology, which we combine with a semi-implicit formulation for the free-energy terms based on the classical convex-splitting approach. The extension of the schemes to an arbitrary number of dimensions is straightforward thanks to their dimensionally split nature, which allows to efficiently solve higher-dimensional problems with a simple parallelisation. The numerical schemes are validated and tested through a variety of examples, in different dimensions, and with various contact angles between droplets and substrates.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2023-0049}, url = {http://global-sci.org/intro/article_detail/cicp/22022.html} }