Kinetic Equation Solver (kesolver) is a solver of the Boltzmann equation using the conservative projection method and its further extensions.

Tcheremissine, F. G. "Conservative evaluation of Boltzmann collision integral in discrete ordinates approximation." Computers & Mathematics with Applications 35.1-2 (1998): 215-221.

Dependencies

Mandatory:

1. A C++ compiler supporting C++11 standard.
2. JsonCpp library. See instructions here.

Optionally:

1. An MPI wrapper for the C++ compiler.
2. Gmsh for mesh generation.
3. ParaView for data visualization.

Building

Run this command to create 2 executables: kes and kes-mpi.

cd src && make -j

By default, mpic++ is used to build an MPI version of the solver.

Currently, only the x86-64 architecture is supported. For a Mac with an arm-based processor, use arch -x86_64 make -j.

Running

The executable files expect a config file in a special kei format, which includes a prepared computational mesh. The path to it is given as a single argument, e.g.

./kes config.kei

A parallel version can be run as follows:

mpirun ./kes-mpi config.kei

Examples of configuration files can be found in tutorials.