MinimalCoupler

A minimal coupling library implementation that exposes the same API as preCICE. The following configuration is hard-coded into this library:

• Two participants named Fluid and Solid with meshes Fluid-mesh and Solid-mesh respectively.
• Two data vectors for Force and Displacement.
• Vertex mapping carried out using nearest-neighbor mapping.
• Uses serial-implicit coupling with Aitken underrelaxation.

Build Instructions

Prerequisites

• CMake 3.22 or higher
• C++ compiler with C++20 support

Building the Library

1. Create a build directory and navigate to it:

mkdir build
cd build

2. Configure the project with CMake:

cmake ..

3. Build the library:

make

Build Output

The build process generates:

• libminimalCoupler.so.3 - The shared library

Usage Instructions

The library is developed to couple the solvers in the perpendicular-flaps tutorials of preCICE. Run the simulations using library preloading:

LD_PRELOAD=/path/to/libminimalCoupler.so.3 ./run.sh