由于直射式喷油孔的结构简单、布置和调整方便,因此已被广泛地应用于冲压发动机的燃烧室中,而且喷孔后方的燃油浓度分布对火焰稳定及燃烧效率有很大影响,由此预知喷孔后方燃油浓度分布对喷孔布置、确定喷孔与稳定器的相对位置是十分重要的。根据试验结果,推导得到了直射式喷孔后方燃油浓度分布的计算公式,编制燃油浓度分布的计算程序,以分析直射式喷油孔后方的燃油浓度场分布。 Because of its simple structure, easy arrangement and adjustment, the direct injection hole has been widely used in the combustion chamber of a ramjet engine and the fuel concentration distribution behind the injection hole has a great influence on flame stability and combustion efficiency. From this It is very important to predict the distribution of the fuel concentration at the rear of the nozzle hole to the nozzle hole, and to determine the relative position of the nozzle hole and the stabilizer. According to the test results, the calculation formula of the fuel concentration distribution at the rear of the direct injection hole is deduced. The calculation program of the fuel concentration distribution is compiled to analyze the distribution of the fuel concentration field behind the direct injection hole.