http://andrealani.github.io/COOLFluiD/
The object-oriented HPC platform for CFD, plasma and multi-physics simulations whose development started in 2002 at the Von Karman Institute for Fluid Dynamics (www.vki.ac.be) in collaboration with the KU Leuven Center for mathematical Plasma Astrophysics (CmPA) dept. (https://wis.kuleuven.be/CmPA) is open.
To get started: https://github.com/andrealani/COOLFluiD/wiki
News & updates on: https://twitter.com/coolfluid