Temperature conditions effects on hydrogen-air flame propagation in the ENACCEF2 experimental facility

Conclusions and perspectives: Mild effect of initial temperature on the flame acceleration phenomenon (based on two experiments performed with 13% of H₂ at 25ºC and 90ºC). Further experiments will enable a more detailed analysis • Higher initial temperatures and different hydrogen concentrations. • Effect of steam Simulations performed by IRSN, JSI and LEI show: • Capabilities/limits of numerical tools; • Strong influence of modeling choices. Data/knowledge gained from ENACEFF2 experiments can be used to: • Improve correlations for laminar/turbulent burning velocity; • Extend the validation domain of combustion models.