Interface-preserving level-set reinitialization for DG-FEM

摘要

This paper presents a contribution to level-set reinitialization in the context of discontinuous Galerkin finite element methods. We focus on high-order polynomials for the discretization and level set geometries, which are comparable to the element size. In contrast to hyperbolic and geometric reinitialization techniques, our method relies on solving a nonlinear elliptic PDE iteratively. We critically compare two different variants of the algorithm experimentally in numerical studies. The results demonstrate that the method is stable for nontrivial test cases and shows high-order accuracy. Copyright (c) 2016 John Wiley & Sons, Ltd.