Numerical investigation of F₂ and H₂ explosion process under flow conditions

Hydrogen is a typical clean energy, the reaction of H₂ and with stronger oxidant F₂ may produce higher energy. To explore the explosion process of H₂ and F₂ under flow conditions and its released heat characteristics, the explosion process of F₂ filling in H₂ pipe with a length of 1 m and a diameter of 0.1 m was numerically simulated, and the influence of F₂ filling rate on the explosion process was studied. The results show that when F₂ was filling because F₂ rapidly mixed with H₂ and reacted to generate HF, the filled F₂, reaction-generated HF, and unreacted H₂ formed a three-stage F₂-HF-H₂ structure in the pipeline, and the formation of this structure was the coupling of flow and reaction; The mass rate has a significant influence on the combustion and explosion process of F₂ and H₂. The maximum explosion overpressures reached 0.5 MPa at the mass rate of 0.02 kg/s and 0.42 MPa at 0.03 kg/s, respectively.