FENaPack is a package implementing preconditioners for Navier-Stokes problem using FEniCS and PETSc packages. In particular, variants of PCD (pressure-convection-diffussion) preconditioner from¹,² are implemented.

To use FENaPack matching version of FEniCS (version ) compiled with PETSc and petsc4py is needed. To install FENaPack from source do:

pip install [--user|--prefix=...] [-e] .

in the source/repository root dir. Editable install using -e allows to use FENaPack directly from source directory while editing it which is suitable for development.

Meshes for running demos can be downloaded from the FEniCS project website by executing download-meshes script. Demos can be run by navigating to a particular demo directory and typing:

NP=4
mpirun -n $NP python demo_foo-bar.py [-h]

Full documentation is available at https://fenapack.readthedocs.io/.

• Jan Blechta <blechta@karlin.mff.cuni.cz>
• Martin Řehoř <rehor@karlin.mff.cuni.cz>

FENaPack is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

FENaPack is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with FENaPack. If not, see <http://www.gnu.org/licenses/>.

This work was supported by The Ministry of Education, Youth and Sports from the Large Infrastructures for Research, Experimental Development and Innovations project „IT4Innovations National Supercomputing Center – LM2015070“.

• Homepage https://github.com/blechta/fenapack
• Testing https://circleci.com/gh/blechta/fenapack
• Documentation https://fenapack.readthedocs.io/
• Bug reports https://github.com/blechta/fenapack/issues