Gerris is an open-source (GPL) flow solver designed for the efficient, adaptive, solution of the incompressible Navier-Stokes equations in complex geometries.
Gerris uses an adaptive octree discretisation and automatically generates time-adaptive meshes for any input geometry in a robust manner.
The most significant improvements for release 0.9.2 are:
- Important bug fixes and improvements for the multilevel Poisson solver can reduce the overall computational cost by a factor of five or more depending on the problem.
- Variable mesh resolution along solid boundaries is now allowed and has been well tested (note however that time-adaptive variable resolution is not allowed on solid boundaries yet).
- The robustness of the solution procedure has been much improved in the case of very complex solid boundaries.
Other improvements include:
- Debian package snapshots.
- Adaptive refinement of VOF-advected tracers.
- Preliminary implementation of CSF surface tension using Renardy et al. "proper discretisation".
- Solid boundaries can be refined according to the local curvature.
- Implicit Coriolis terms work with the Navier-Stokes solver.
- Support for "thin" 3D domains.
Improvements in release 0.4.2 of GfsView include:
- Bug fix for gtk-2.8 handling of "client events".
- New "Clipping" object for 3D clipping planes.
- Reorganised objects in a new "Objects" menu.
- Serious bug fix for isolines levels parsing.
- Debian snapshots.
