Gerris Flow Solver
 Gerris is a tool for
generic numerical simulations of flows (CFD), in
geometrically complex geometries and including adaptive, multiphase and
interfacial flows capabilities.
It can deal with
arbitrarily complex solid boundaries in an automatic
manner and uses dynamic adaptive mesh refinement to optimise the
discretisation according to the flow solution.
Gerris uses an "embedded boundary" technique. Grid generation
reduces
to the computation of the "shape" (surface and volume fractions) of
Cartesian (cubic) cells cut by the solid boundaries.
The software is supported by NIWA (National Institute of Water
and Atmospheric research) and by the Marsden Fund of the Royal Society
of New Zealand.
Features include:
- Solves the time-dependent incompressible variable-density
Euler, Stokes or Navier-Stokes equations
- Adaptive mesh refinement: the resolution is adapted
dynamically to the features of the flow
- Entirely automatic mesh generation in complex geometries
- Quadtree-based (Octree in 3D) spatial discretisation
with automatic (and possibly dynamic) local refinement
- Unlimited number of advected/diffused passive tracers
- Multigrid Poisson solver
- Second-order Godunov type advection scheme
- Solves the time-dependent incompressible Euler equations
- Solves the shallow-water (Saint-Venant) equations
- Support for complex solid boundaries (automatic
locally-refined mesh generation)
- Flexible object-oriented specification of boundary
conditions
- Portable parallel support using the MPI library
- Flexible specification of additional source terms
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Last Updated Monday, August 10 2009 @ 03:28 PM EDT
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