介质流量对等离子体点火器出口参数的影响研究

Effect of medium flux on exit parameter of plasma ignitor

等离子体点火是航空动力领域的一种新概念点火技术。等离子体点火是首先产生高温点火核心,然后依靠产生的高温、高压和活化分子点燃整个燃烧室的油气混合物。通过对相同进口温度和静压条件下进口气流速度分别为10m/s、20m/s、30m/s、40m/s、50m/s五种情况的出口温度、速度和紊流动能进行比较分析,研究介质流量对等离子体点火器出口参数的影响规律。结果表明,介质流量增大有助于提高等离子体点火的可靠性,使油气混合物的燃烧速率和效率提高。

Plasma ignition is a new conception of ignition technology in aircraft propulsion field. Plasma ignition produce a ignition core with a high temperature. Then it ignite the main fuel torch of the whole firebox with the high temperature and pressure and active particle. Contrasted and analyzed the exit temperature ,velocity and turbulence kinetic energy of inlet velocity at 10m/s,20m/s,30m/s,40m/s,50m/s. Effect of medium flux to exit parameter of plasma ignitor was investigated. The results shows that high medium flux helps to advance the ignition reliability and the combustion velocity and efficiency.