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为了发展先进的燃烧诊断技术,对可调二极管激光红外吸收术用于燃烧多参数测量的原理、方法和测量系统进行了全面的论述,并将该方法应用于脉冲爆震室中未燃组分、当量比的测量中。因为爆震室中燃料的分布和填充程度决定了脉冲爆震发动机(PDE)的性能,故试验中精心控制燃料填充程度,以研究爆震管中填充程度对脉冲爆震发动机性能的影响。实验结果表明,可调二极管激光红外吸收术对于监测PDE的性能,进而对PDE的控制和优化极有意义。
In order to develop advanced combustion diagnostic techniques, the principle, method and measurement system of tunable diode laser infrared absorption for combustion multi-parameter measurement are comprehensively discussed. The method is applied to the unburned components in pulse detonation chamber , Equivalent ratio measurement. Because the distribution and fill level of fuel in the detonation chamber determines the performance of the pulse detonation engine (PDE), the degree of fuel filling is carefully controlled in the experiment to investigate the effect of detonation tube fill on the performance of the pulse detonation engine. The experimental results show that tunable diode laser infrared absorption is very meaningful for monitoring the performance of PDE, and then controlling and optimizing PDE.