Publicación: gVOF: An open-source package for unsplit geometric volume of fluid methods on arbitrary grids
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2022-08
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info:eu-repo/semantics/openAccess
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Elsevier
Resumen
The gVOF package implements several accurate and efficient geometric volume of fluid (VOF) methods on arbitrary grids, either structured or unstructured with convex or non-convex cells, based on multidimensional unsplit advection and piecewise linear interface calculation (PLIC) schemes, with the purpose of facilitating and extending the use of advanced unsplit geometric VOF methods in new or existing computational fluid dynamics codes. The package includes a complete and self-contained set of routines for VOF initialization, interface reconstruction and fluid advection, and uses as external libraries a set of publicly available in-house tools to perform several analytical and geometrical operations. These operations may involve handling of high-complex non-convex flux polyhedra, even with self-intersecting faces, which are robustly and efficiently treated in this work without the need of costly techniques based on convex decomposition. Results for the accuracy, computational efficiency, and volume (local and global) conservation properties of different combinations of the implemented advection and reconstruction methods are presented for several numerical tests on structured and unstructured grids. An extensive comparison with results obtained by other authors using advanced geometric VOF methods shows the outstanding performance of the gVOF package in terms of efficiency and accuracy. To demonstrate the performance of the package in solving complex two-phase flow problems, the implemented methods are combined with an existing in-house code to simulate the impact of a water drop on a free surface.
Descripción
La versión registrada de este artículo, publicado por primera vez en Computer Physics Communications, Volume 277, 2022, 108400, ISSN 0010-4655, está disponible en línea en el sitio web del editor: https://doi.org/10.1016/j.cpc.2022.108400.
The copyrighted version of this article, first published in Computer Physics Communications, Volume 277, 2022, 108400, ISSN 0010-4655, is available online at the publisher's website: https://doi.org/10.1016/j.cpc.2022.108400.
Categorías UNESCO
Palabras clave
Volume of fluid method, volume fraction initialization, multidimensional unsplit advection, PLIC interface reconstruction, arbitrary grids, non-convex geometry
Citación
Joaquín López, Julio Hernández, gVOF: An open-source package for unsplit geometric volume of fluid methods on arbitrary grids, Computer Physics Communications, Volume 277, 2022, 108400, ISSN 0010-4655, https://doi.org/10.1016/j.cpc.2022.108400.
Centro
Facultades y escuelas::E.T.S. de Ingenieros Industriales
Departamento
Mecánica