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A Modified Sub-Cell-Fix Method for Re-Initialization of Level-Set Distance Function and Its Dependence Tests on Grid Stretching

In English

Författare

  • Sun Mingbo
  • Xue-Song Bai
  • Wei Dong Liu
  • Jian Han Liang
  • Zhen Guo Wang

Summary, in English

The sub-cell-fix (SCF) method proposed by Russo and Smereka(3) computes the distance function of the cells adjacent to the zero level-set without disturbing the original zero level-set. A modified sub-cell-fix scheme independent of local curvature is developed in this paper, which makes use of a combination of the points adjacent to zero level-set surfaces and preserves the interface in a second-order accuracy. The new sub-cell-fix scheme is capable of handling large local curvature, and as a result it demonstrates satisfactory performance on several challenging test cases. The limitations of the modified scheme on stretched grids are tested and it is found that the highly stretched grid causes large numerical errors, and needs further assessment and modification.

Publiceringsår

2010

Språk

Engelska

Sidor

1615-1629

Publikation/Tidskrift/Serie

Modern Physics Letters B

Volym

24

Issue

15

Dokumenttyp

Artikel i tidskrift

Förlag

World Scientific Publishing

Ämne

  • Fluid Mechanics and Acoustics

Nyckelord

  • sub-cell-fix
  • level-set equation
  • Re-initialization
  • distance function
  • grid stretching
  • method

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0217-9849