Kunz, Jana ; Leroux, Louise ; Hasse, Hans ; Müller, Ralf (2024)
Behavior of a phase field model for wetting on structured surfaces.
In: Proceedings in Applied Mathematics and Mechanics (PAMM)
doi: 10.1002/pamm.202400198
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Technical surfaces are generally not perfectly smooth, but usually exhibit roughness. Additionally, as micro production techniques continue to evolve, geometrical surface structures at the micro scale can be manufactured, which presents a challenge for wetting models that are commonly formulated for smooth surfaces. A phase field model for surface wetting, proposed by Diewald et al., serves as a basis for this investigation. On smooth surfaces, the width of the gas-liquid interface can be widened for scale bridging purposes, as this allows for accurate computations on coarse grids. However, it was observed that this interface scaling impacts the results when the model is applied to rough surfaces, and therefore a free choice of the interface width is not always sensible. In this work, the ability of the model to deal with sinusoidally shaped surfaces is investigated. An Allen–Cahn evolution equation is used to determine static equilibrium configurations for droplets on such surfaces.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Kunz, Jana ; Leroux, Louise ; Hasse, Hans ; Müller, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Behavior of a phase field model for wetting on structured surfaces |
| Sprache: | Englisch |
| Publikationsjahr: | September 2024 |
| Ort: | Weinheim |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Proceedings in Applied Mathematics and Mechanics (PAMM) |
| Kollation: | 7 Seiten |
| DOI: | 10.1002/pamm.202400198 |
| Kurzbeschreibung (Abstract): | Technical surfaces are generally not perfectly smooth, but usually exhibit roughness. Additionally, as micro production techniques continue to evolve, geometrical surface structures at the micro scale can be manufactured, which presents a challenge for wetting models that are commonly formulated for smooth surfaces. A phase field model for surface wetting, proposed by Diewald et al., serves as a basis for this investigation. On smooth surfaces, the width of the gas-liquid interface can be widened for scale bridging purposes, as this allows for accurate computations on coarse grids. However, it was observed that this interface scaling impacts the results when the model is applied to rough surfaces, and therefore a free choice of the interface width is not always sensible. In this work, the ability of the model to deal with sinusoidally shaped surfaces is investigated. An Allen–Cahn evolution equation is used to determine static equilibrium configurations for droplets on such surfaces. |
| ID-Nummer: | Artikel-ID: e202400198 |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Fachgebiete der Mechanik 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Fachgebiete der Mechanik > Fachgebiet Kontinuumsmechanik |
| Hinterlegungsdatum: | 15 Okt 2024 08:35 |
| Letzte Änderung: | 16 Okt 2024 10:23 |
| PPN: | 52225294X |
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