Interchangeable SPH and level set method in multiphase fluids

Ho Young Lee, Jeong Mo Hong, Chang Hun Kim

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Subgrid-scale fluid is difficult to represent realistically in a grid-based fluid simulation. We show how to describe such small-scale details effectively, even on a coarse grid, by using escaped particles. The simulation of these particles with SPH (smooth particle hydrodynamics) allows the illustration of dynamic and realistic animation of fluids. Particles modeled by SPH have a force which leads them to merge if they are within a certain range. This reduces the accuracy of a simulation. Consequently, aggregated particles which form volumes large enough to be described by the level set method will be simulated inefficiently by particles. We address this problem with a new method in which details too small for the grid are represented by particles, while the level set method with a grid is used to describe merged particles on the grid.

Original languageEnglish
Pages (from-to)713-718
Number of pages6
JournalVisual Computer
Issue number5-7
Publication statusPublished - 2009 May


  • Bubbles
  • Fluid simulation
  • Grid-based simulation
  • Level set
  • Multiphase fluids
  • Physically based modeling
  • SPH

ASJC Scopus subject areas

  • Software
  • Computer Vision and Pattern Recognition
  • Computer Graphics and Computer-Aided Design


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