Vented explosion of hydrogen / air mixture: an inter comparison benchmark exercise

Explosion venting is widely using mitigation solution in the process industry to protect indoor equipment or buildings from excessive internal pressure caused by an accidental explosion. However, vented explosion is a very complicated phenomenon to model with computational fluid dynamics (CFD). In the framework, of a French working group, the main target of this investigation is to assess the predictive capabilities of five CFD codes used by five different organizations by means of comparison with the recent experimental data. On this basis several recommendations for the CFD modelling of vented explosions are suggested.