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对一种采用声能喷嘴供油方式的级间燃烧室进行了性能试验研究.试验结果表明:当进口马赫数为0.20～0.40,燃烧室的熄火余气系数为25～35,燃烧室的稳定工作范围较宽;随余气系数增大,出口温度分布均匀性提高;燃烧效率为96%～98%,随余气系数减小,燃烧效率降低;进口马赫数对点火性能、熄火性能、出口温度分布和燃烧效率的影响较小;壁面热点温度出现在凹腔的后壁面;总压损失系数为0.03～0.11,热态时比冷态时高0.015左右;CO和NOx的排放指数分别为20～46和0.9～2.1,进口马赫数、余气系数均对污染物排放有较大影响.
A kind of intercritical combustion chamber with acoustic nozzle oil supply is studied in this paper.The experimental results show that when the inlet Mach number is 0.20 ~ 0.40, the flameout residual gas coefficient of the combustion chamber is 25 ~ 35, the stability of the combustion chamber The working range is wide; with the increase of the gas coefficient, the uniformity of the outlet temperature distribution is improved; the combustion efficiency is 96% -98%; the combustion efficiency decreases as the gas coefficient decreases; the Mach number of inlet affects the ignition performance, flameout performance, Temperature distribution and combustion efficiency. The hot spot temperature appeared on the back wall of the cavity, the total pressure loss coefficient was 0.03-0.11, hot state was about 0.015 higher than cold state, and the emission indexes of CO and NOx were 20 ~ 46 and 0.9 ~ 2.1, the inlet Mach number, residual gas coefficient have a greater impact on pollutant emissions.