Regarding problems with installing OpenFOAM 2.3.1 on Fedora 21
From OpenFOAMWiki
The instructions are now written and tested: Installation/Linux/OpenFOAM-2.3.1/Fedora#Fedora_21
The instructions are now written and tested: Installation/Linux/OpenFOAM-2.3.1/Fedora#Fedora_21