Assuming you have OpenFOAM version 6 with environment variables set, here is all you need to download, compile, and run sofcFoam.
cd <myChosenParentDirectory> git clone git://git.code.sf.net/p/openfuelcell/git openfuelcell cd openfuelcell
cd src ./Allwmake cd ..
cd run/<caseDirectory> #coFlow, counterFlow, crossFlow, ... make mesh
make srun
make view