Modelling the mitigation of hydrogen deflagrations in a vented cylindrical rig with water fog and nitrogen dilution

► Examine N2 and water fog mitigation of H2-O2-N2 deflagrations for a vented cylinder. ► Compare FLACS CFD explosion model simulations and experimental test data results. ► The model reproduces similar general trends to those found in the experimental tests. ► The combination of N2 dilution and fog is more effective than predicted in some cases.