Hydrogen Distribution, Combustion and Detonation for H2 Risk Analysis in Large Facilities

The French Atomic Energy Commission (C.E.A.) is developing a hydrogen risk analysis code (safety code) which incorporates both lumped-parameter and multi-dimensional formulations. In this paper we present the governing equations, numerical strategy and schemes used for the lumped parameter approach as well as for the multi-dimensional one. Typical numerical studies will be presented for hydrogen distribution and combustion applications in realistic large geometries.