experimental preCICE-adapter for the open source multiphysical simulation software Elmer FEM
- preCICE
- Recommended: Install debian package, please refer to https://precice.org/installation-overview.html for installation
- Elmer
- Recommended: Install debian package, please refer to http://www.elmerfem.org/blog/binaries/
The adapter uses a custom-made Elmer solver for coupling with preCICE. This solver is compiled using elmerf90 and then plugged into the case.sif file in a minimally-invasive fashion. Examples for usage of the adapter can be found in Partitioned_Heat_Conduction and in the preCICE tutorial flow-over-heated-plate. For new users it is recommended to look at the tutorial case as a starting point. Refer to the README in Partitioned_Heat_Conduction/ for all necessary steps.
We assume you already have your own application in Elmer and you want to couple it to another solver using preCICE. Your application includes a case.sif file and the required mesh files.
- Take one of the existing example cases and copy the
Coupler_Solver.F90from there into your project folder. - Use the provided instructions to compile the adapter.
- Use one of the provided
case.siffiles from the example as a template and add the respective commands for calling the adapter in yourcase.siffile. - Create an appropriate
precice-config.xmlfor the coupling. - Run your case in Elmer via
ElmerSolver case.sif. You should now see that Elmer waits for the other participant. When you start the other participant your coupled simulation will be executed.
Currently, implicit coupling is not supported by the adapter. Parallelization and other advanced features were not explicitly developed or tested.
Partitioned heat equation is thoroughly tested for explicit coupling and gives correct results for an Elmer-Elmer coupling and for Elmer-FEniCS coupling (where Elmer is the Dirichlet participant). If Elmer is the Neumann participant in Elmer-FEniCS coupling, problems occur (probably due to the flux computation, see thesis of Hisham Saeed for details).
The example case Perpendicular_Flap is currently only a monolithic simulation, but a good starting point for FSI. See the perpendicular flap tutorial for details.
Coupler_Solver.F90 is currently duplicated for every example.
The initial version of this adapter was developed by Hisham Saeed during his work on his master's thesis under supervision of Benjamin Rodenberg.
The adapter was updated for preCICE v3 by Alihossein Sepahvand.