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Interface Reconstruction in Multi-fluid, Multi-phase Flow Simulations

Garimella, Rao V., Vadim Dyadechko, Blair K. Swartz, and Mikhail J.Shashkov

Proceedings, 14th International Meshing Roundtable, Springer-Verlag, pp.19-32, September 11-14 2005

IMR
PROCEEDINGS

14th International Meshing Roundtable
San Diego, CA, USA
September 11-14, 2005

Los Alamos National Laboratory, Los Alamos, NM 87545
rao@lanl.gov, vdyadechko@lanl.gov, bks@lanl.gov, shashkov@lanl.gov

Abstract
An advanced Volume-of-Fluid or VOF procedure for locally conservative reconstruction of multi-material interfaces based on volume fraction information in cells of an unstructured mesh is presented in this paper. The procedure employs improved neighbor definitions and topological consistency checks of the interface for computing a more accurate interface approximation. Comparison with previously published results for test problems involving severe deformation of the materials (such as vortex-in-a-box problem) show that this procedure produces more accurate results and reduces the ├Čnumerical surface tension├« typically seen in VOF methods.

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