A new finite element level set reinitialization method based on the shifted boundary method

Tianju Xue, Wai Ching Sun, Sigrid Adriaenssens, Yujie Wei, Chuanqi Liu

Research output: Contribution to journalArticlepeer-review

Abstract

We propose an efficient method to reinitialize a level set function to a signed distance function by solving an elliptic problem using the finite element method. The original zero level set interface is preserved by means of applying modified boundary conditions to a surrogate/approximate interface weakly with a penalty method. Narrow band technique is adopted to reinforce the robustness of the proposed method where a smooth initial guess for the nonlinear equation is given by solving a Laplace's equation. Numerical benchmarks in both two dimensions and three dimensions confirm the optimal convergence rates under several different error measures including an interface error measure, showing that our method is accurate and robust. A three-dimensional genus 2 surface is adopted to demonstrate the capability of the method for the reinitialization of complicated geometries.

Original languageEnglish (US)
Article number110360
JournalJournal of Computational Physics
Volume438
DOIs
StatePublished - Aug 1 2021

All Science Journal Classification (ASJC) codes

  • Numerical Analysis
  • Modeling and Simulation
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)
  • Computer Science Applications
  • Computational Mathematics
  • Applied Mathematics

Keywords

  • Level set
  • Reinitialization
  • Shift boundary method

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