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在直联式超声速燃烧试验台上应用气泡雾化喷嘴,煤油当量比0.97和0.33分别使用氢气、空气和氮气为起泡气体进行了煤油超声速燃烧试验.在多种工况下实现了煤油的稳定燃烧.研究发现:凹槽火焰稳定器通过制造高温低速漩涡区增加煤油在燃烧室内的停留时间,并使煤油得到充分加热从而实现煤油的点火和稳定燃烧.通过气泡雾化喷嘴加入少量氢气,由于氢气进入燃烧室后迅速自燃释放热量,能够提高煤油的燃烧性能,使得煤油能够在无凹槽火焰稳定器的条件下稳定燃烧.
In the direct-coupled supersonic combustion test bench, the kerosene atomization nozzle was used, and the kerosene equivalent ratio of 0.97 and 0.33 were used respectively to carry out the supersonic combustion test of kerosene using hydrogen, air and nitrogen as bubbling gas. The stability of kerosene was achieved under various working conditions Combustion.It is found that the groove flame stabilizer increases kerosene residence time in the combustion chamber through the manufacture of high temperature and low velocity swirling zone and kerosene is sufficiently heated to achieve kerosene ignition and stable combustion.Be added a small amount of hydrogen through the bubble atomization nozzle due to Hydrogen spontaneously burns and releases heat rapidly after it enters the combustion chamber, which can improve the combustion performance of kerosene, and make kerosene stably burn without grooved flame stabilizer.