Median Filters for Anisotropic Wetting / Dewetting Problems
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866912159230853120 |
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| author | Guo, Jiajia Esedoglu, Selim |
| author_facet | Guo, Jiajia Esedoglu, Selim |
| contents | We present new level set methods for multiphase, anisotropic (weighted) motion by mean curvature of networks, focusing on wetting-dewetting problems where one out of three phases is stationary -- a good testbed for checking whether complicated junction conditions are correctly enforced. The new schemes are vectorial median filters: The level set values at the next time step are determined by a sorting procedure performed on the most recent level set values. Detailed numerical convergence studies are presented, showing that the correct angle conditions at triple junctions (which include torque terms due to anisotropy) are indeed indirectly and automatically attained. Other standard benefits of level set methods, such as subgrid accuracy on uniform grids via interpolation and seamless treatment of topological changes, remain intact. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_12384 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Median Filters for Anisotropic Wetting / Dewetting Problems Guo, Jiajia Esedoglu, Selim Numerical Analysis 65M12, 35K93 We present new level set methods for multiphase, anisotropic (weighted) motion by mean curvature of networks, focusing on wetting-dewetting problems where one out of three phases is stationary -- a good testbed for checking whether complicated junction conditions are correctly enforced. The new schemes are vectorial median filters: The level set values at the next time step are determined by a sorting procedure performed on the most recent level set values. Detailed numerical convergence studies are presented, showing that the correct angle conditions at triple junctions (which include torque terms due to anisotropy) are indeed indirectly and automatically attained. Other standard benefits of level set methods, such as subgrid accuracy on uniform grids via interpolation and seamless treatment of topological changes, remain intact. |
| title | Median Filters for Anisotropic Wetting / Dewetting Problems |
| topic | Numerical Analysis 65M12, 35K93 |
| url | https://arxiv.org/abs/2412.12384 |