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

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Abstract

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.

Detaljer

Författare
  • Sun Mingbo
  • Xue-Song Bai
  • Wei Dong Liu
  • Jian Han Liang
  • Zhen Guo Wang
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Strömningsmekanik och akustik

Nyckelord

Originalspråkengelska
Sidor (från-till)1615-1629
TidskriftModern Physics Letters B
Volym24
Utgåva nummer15
StatusPublished - 2010
PublikationskategoriForskning
Peer review utfördJa