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A fully Eulerian hybrid immersed boundary-phase field model for contact line dynamics on complex geometries
https://oist.repo.nii.ac.jp/records/2151
https://oist.repo.nii.ac.jp/records/215138c57c90-6d23-4cef-9718-68ac269e9ff7
名前 / ファイル | ライセンス | アクション |
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1-s2.0-S0021999121003636-main (2.3 MB)
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Creative Commons Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-05-28 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | A fully Eulerian hybrid immersed boundary-phase field model for contact line dynamics on complex geometries | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Phase field model | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Immersed boundary method | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Complex geometry | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Wetting | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Cahn-Hilliard equation | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Shahmardi, Armin
× Shahmardi, Armin× Rosti, Marco Edoardo× Tammisola, Outi× Brandt, Luca |
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書誌情報 |
en : Journal of Computational Physics 巻 443, p. 110468, 発行日 2021-05-26 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | We present a fully Eulerian hybrid immersed-boundary/phase-field model to simulate wetting and contact line motion over any arbitrary geometry. The solid wall is described with a volume-penalisation ghost-cell immersed boundary whereas the interface between the two fluids by a diffuse-interface method. The contact line motion on the complex wall is prescribed via slip velocity in the momentum equation and static/dynamic contact angle condition for the order parameter of the Cahn-Hilliard model. This combination requires accurate computations of the normal and tangential gradients of the scalar order parameter and of the components of the velocity. However, the present algorithm requires the computation of averaging weights and other geometrical variables as a preprocessing step. Several validation tests are reported in the manuscript, together with 2D simulations of a droplet spreading over a sinusoidal wall with different contact angles and slip length and a spherical droplet spreading over a sphere, showing that the proposed algorithm is capable to deal with the three-phase contact line motion over any complex wall. The Eulerian feature of the algorithm facilitates the implementation and provides a straight-forward and potentially highly scalable parallelisation. The employed parallelisation of the underlying Navier-Stokes solver can be efficiently used for the multiphase part as well. The procedure proposed here can be directly employed to impose any types of boundary conditions (Neumann, Dirichlet and mixed) for any field variable evolving over a complex geometry, modelled with an immersed-boundary approach (for instance, modelling deformable biological membranes, red blood cells, solidification, evaporation and boiling, to name a few). | |||||
出版者 | ||||||
出版者 | Elsevier. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0021-9991 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1016/j.jcp.2021.110468 | |||||
権利 | ||||||
権利情報 | © 2021 The Author(s). | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.sciencedirect.com/science/article/pii/S0021999121003636 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |