Tetra-marching Procedure For High Order
Level Contour Reconstruction Method
Author(s)
I. Yoon & S. Shin
Abstract
Direct numerical simulation of the multiphase flow on a fixed Eulerian grid
became increasingly popular due to its simplicity and robustness. Lately, there
have been efforts to construct hybrids from existing well-known methods
including VOF, Level Set, and Front Tracking with the intention of overcoming
the inherent drawbacks of each method. The Level Contour Reconstruction
Method is one of the hybrid type methods, which combines the Front Tracking
and Level Set characteristics. By introducing a high order interpolation kernel
during interface reconstruction, we could reconstruct the interface very
accurately and smoothly compared to linear interpolation of a given distance
function field. The high order reconstruction procedure can be undertaken,
generally, with the same rectangular shaped Eulerian grid structure as the flow
computation. With this rectangular shaped grid, there can be more than two lines
in a single cell during the reconstruction. In this paper, we introduce the tetramarching
reconstruction procedure which can eliminate ambiguity of drawing
contour lines between multiple edge points in a single cell during high order
reconstruction. We tested several benchmarking simulations of interface
evolution and found that high order reconstruction with a tetra-marching
procedure enables the fidelity of the reconstructed interface, which is continuous
and smooth even with a highly distorted interface.
Keywords: interface reconstruction, front tracking, level set, tetra-marching,
numerical simulation.
Keywords
interface reconstruction, front tracking, level set, tetra-marching,
numerical simulation
Related Book
Other papers in this volume
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