Two CERFACS proposals have been accepted at the last PRACE call. The two studies will be performed with the AVBP solver and will address two very different topics: “Large Eddy Simulation of the Deflagration to Detonation Transition » (in collaboration with TOTAL) will focus on explosions in buildings while the “CRITICal – ChaRacterIzing Two-phase Ignition in Combustors » (with the EM2C laboratory in Centralesupelec) will target aeronautic applications.