燃油初温对两相爆震性能影响的实验研究

To investigate the effects of initial fuel temperature on the performance of two-phase detonation, experiments under different fuel temperature conditions from 30℃ to 200℃ were conducted in a 24mm detonation tube at 10Hz, utilizing kerosene and oxygen as fuel and oxidant, respectively. The results show that, with the rise of the initial temperature of fuel, the steady propagation velocity of the flame front increases gradually, the combustion stability increases, the two-phase detonation peak pressure increases, the detonation initiation distance reduces. In addition, the observation of detonation tail flame at different initial fuel temperatures shows that, with the increase of fuel temperature, both the total pressure of unsteady exhaust process and the thrust available for the engine increase.