# Prerequistes - [HZDR Multiphase Addon for OpenFOAM 1.1.0](https://doi.org/10.14278/rodare.896) - installation instruction will use OpenFOAM environment variables * FOAM_RUN: directory where OpenFOAM simulation setups are stored # Installation of HZDR Multiphase Case Collection for OpenFOAM - download tar archive for HZDR Multiphase Case Collection for OpenFOAM - make sure your OpenFOAM environment is setup correctly, e.g. by running `foamVersion` - unpack into OpenFOAM run directory and run desired case ```shell mkdir -p $FOAM_RUN tar -xzf HZDR-Multiphase-Case-Collection-.tar.gz -C $FOAM_RUN ```