The role of CFD combustion modeling in hydrogen safety management - V: Validation for slow deflagrations in homogeneous hydrogen-air experiments

•Validation of the modeling approach for hydrogen deflagration is presented.•Modeling approach is based on two combustion models implemented in ANSYS Fluent.•Experiments with various initial hydrogen concentrations were used for validation.•The effects of heat transfer mechanisms selection were also investigated.•The grid sensitivity analysis was performed as well.