Energy Output of High‐speed Flowing Two‐phase IPN/Air in the Combustion Chamber

Fuel‐air cloud explosions or detonations are often affected by initial ambient conditions. A two‐dimensional (2D) semi‐confined model was established to study the effects of the inflowing air temperature and initial temperature of the combustor on the explosion process of isopropyl nitrate (IPN)/air mixture. The results showed that at different initial temperatures (1000–3000 K), the first peak pressure (P1) and second peak pressure (P2) decreased with the increase in initial temperature; the maximum flame temperature (2338–3534 K) increased with the increasing initial temperature; the explosion pressure and temperature had the opposite trends with the initial temperature, indicating that the oxygen content in the combustor had a greater impact on the explosion pressure, while the initial temperature had a more significant effect on the flame temperature. Under different incoming air temperatures (1000–3000 K), the flame temperature (∼2700 K) of the two‐phase explosion had a small difference at the incoming temperature of≤2500 K, signifying that the airflow temperature (