Roenby, Johan and Bredmose, Henrik and Jasak, Hrvoje (2016) A computational method for sharp interface advection. = A computational method for sharp interface advection. Royal Society Open Science, 3 (11). ISSN 2054-5703. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. . Točan broj autora: 3.
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A computational method for sharp interface advection.pdf - Published Version Jezik dokumenta:English Download (5MB) | Preview |
Abstract
We devise a numerical method for passive advection of a surface, such as the interface between two incompressible fluids, across a computational mesh. The method is called isoAdvector, and is developed for general meshes consisting of arbitrary polyhedral cells. The algorithm is based on the volume of fluid (VOF) idea of calculating the volume of one of the fluids transported across the mesh faces during a time step. The novelty of the isoAdvector concept consists of two parts. First, we exploit an isosurface concept for modelling the interface inside cells in a geometric surface reconstruction step. Second, from the reconstructed surface, we model the motion of the face–interface intersection line for a general polygonal face to obtain the time evolution within a time step of the submerged face area. Integrating this submerged area over the time step leads to an accurate estimate for the total volume of fluid transported across the face. The method was tested on simple two- dimensional and three-dimensional interface advection problems on both structured and unstructured meshes. The results are very satisfactory in terms of volume conservation, boundedness, surface sharpness and efficiency. The isoAdvector method was implemented as an OpenFOAM extension and is published as open source. Izvorni jezik: ENG
| Item Type: | Article (["eprint_fieldopt_article_type_article" not defined]) |
|---|---|
| Keywords (Croatian): | interfacial flows; volume of fluid method; unstructured meshes; isoAdvector; OpenFOAM |
| Subjects: | TECHNICAL SCIENCE > Mechanical Engineering |
| Divisions: | 500 Department of Energy, Power Engineering and Environment > 530 Chair of Turbomachinery |
| Indexed in Web of Science: | Yes |
| Indexed in Current Contents: | No |
| Date Deposited: | 29 Mar 2017 11:37 |
| Last Modified: | 12 Jan 2018 10:35 |
| URI: | http://repozitorij.fsb.hr/id/eprint/7660 |
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