Compressive VOF method with skewness correction to capture sharp interfaces on arbitrary meshes
File(s)denner.pdf (224.04 KB)
Accepted version
Author(s)
Denner, F
van Wachem, BGM
Type
Journal Article
Abstract
The accurate and efficient modelling of two-phase flows is at present mostly limited to structured, unskewed meshes, due to the additional topological and numerical complexity of arbitrary, unstructured meshes. Compressive VOF methods which discretize the interface advection with algebraic differencing schemes are computationally efficient and inherently applicable to arbitrary meshes. However, compressive VOF methods evidently suffer severely from numerical diffusion on meshes with topological skewness. In this paper we present a compressive VOF method using a state-of-the-art donor–acceptor advection scheme which includes novel modifications to substantially reduce numerical diffusion on arbitrary meshes without adding computational complexity. The new methodology accurately captures evolving interfaces on any arbitrary, non-overlapping mesh and conserves mass within the limits of the applied solver tolerance. A thorough validation of the presented methods is conducted, examining the pure advection of the interface indicator function as well as the application to evolving interfaces with surface tension. Crucially, the results on equidistant Cartesian and arbitrary tetrahedral meshes are shown to be comparable and accurate.
Date Issued
2014-09-09
Date Acceptance
2014-09-03
Citation
Journal of Computational Physics, 2014, 279, pp.127-144
ISSN
1090-2716
Publisher
Elsevier
Start Page
127
End Page
144
Journal / Book Title
Journal of Computational Physics
Volume
279
Copyright Statement
© 2014, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
http://www.sciencedirect.com/science/article/pii/S0021999114006287
Subjects
Volume of fluid (VOF) method
Two-phase flows
Interface capturing
Advection scheme
Unstructured meshes
Notes
file: :: mendeley-groups: Articles
Publication Status
Published