Publicación: A new isosurface extraction method on arbitrary grids
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Fecha
2021-11
Autores
López, Joaquín
Zamora, Rosendo
Faura, Félix
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Derechos de acceso
info:eu-repo/semantics/openAccess
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Editor
Elsevier
Resumen
The development of interface-capturing methods (such as level-set, phase-field or volume of fluid (VOF) methods) for arbitrary 3D grids has further highlighted the need for more accurate and efficient interface reconstruction procedures. In this work, we propose a new method for the extraction of isosurfaces on arbitrary polyhedra that can be used with advantage for this purpose. The isosurface is extracted from volume fractions by a general polygon tracing procedure, which is valid for convex or non-convex geometries, even with non-planar faces. The proposed method, which can be considered as an extension of the marching cubes technique, produces consistent results even for ambiguous situations in polyhedra of arbitrary shape. To show the reproducibility of the results presented in this work, we provide the open source library isoap, which has been developed to implement the proposed method and includes test programs to demonstrate the successful extraction of isosurfaces on several grids with polyhedral cells of different types. We present results obtained not only for isosurface extraction from discrete volume fractions resulting from a volume of fluid method, but also from data sets obtained from implicit mathematical functions and signed distances to scanned surfaces. The improvement provided by the proposed method for the extraction of isosurfaces in arbitrary grids will also be very useful in other fields, such as CFD visualization or medical imaging.
Descripción
La versión registrada de este artículo, publicado por primera vez en Journal of Computational Physics, Volume 444, 2021, 110579, ISSN 0021-9991, está disponible en línea en el sitio web del editor:
https://doi.org/10.1016/j.jcp.2021.110579.
The copyrighted version of this article, first published in Journal of Computational Physics, Volume 444, 2021, 110579, ISSN 0021-9991, is available online on the publisher's website:
https://doi.org/10.1016/j.jcp.2021.110579.
Categorías UNESCO
Palabras clave
Volume of fluid method, interface reconstruction, isosurface extraction, non-convex polyhedra, unstructured irregular grids, signed distance
Citación
Joaquín López, Adolfo Esteban, Julio Hernández, Pablo Gómez, Rosendo Zamora, Claudio Zanzi, Félix Faura, A new isosurface extraction method on arbitrary grids, Journal of Computational Physics, Volume 444, 2021, 110579, ISSN 0021-9991, https://doi.org/10.1016/j.jcp.2021.110579.
Centro
Facultades y escuelas::E.T.S. de Ingenieros Industriales
Departamento
Mecánica