Gerris: a tree-based adaptive solver for the incompressible Euler equations in complex geometries

  • Authors:
  • Stéphane Popinet

  • Affiliations:
  • National Institute of Water and Atmospheric Research, P.O. Box 14-901, Kilbirnie, Wellington, New Zealand

  • Venue:
  • Journal of Computational Physics
  • Year:
  • 2003

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Abstract

An adaptive mesh projection method for the time-dependent incompressible Euler equations is presented. The domain is spatially discretised using quad/octrees and a multilevel Poisson solver is used to obtain the pressure. Complex solid boundaries are represented using a volume-of-fluid approach. Second-order convergence in space and time is demonstrated on regular, statically and dynamically refined grids. The quad/octree discretisation proves to be very flexible and allows accurate and efficient tracking of flow features. The source code of the method implementation is freely available.