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中文摘要：
为获得直流电弧等离子体射流点火器的点火特性,在实验燃烧段中进行了丙烷/空气混合气的点火实验,并与常规电火花点火器进行了对比。研究了2种点火方式下可燃混合气的点火过程,燃烧温度随时间的变化,点火延迟时间随可燃混合气余气系数的变化。实验结果表明：等离子体射流点火时,可燃混合气的燃烧温度上升速率大于电火花点火的,但2种点火方式下的稳定燃烧温度均为1 053K;等离子体射流点火延迟时间小于电火花点火的。
英文摘要：
To obtain the ignition characteristics of direct arc plasma jet igniter,the ignition of propane/air mixtures in combustion chamber was conducted and compared to spark igniter.The ignition process of combustible mixtures,variation of combustion temperature with time,and ignition delay time with excess air coefficient were studied under two ignition methods.Experimental results show that combustion temperature rising rate of plasma jet ignition are larger than that of spark ignition,and the stable combustion temperature is identical to 1 053 K;plasma jet ignition delay time is shorter than that of spark ignition.
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Numerical simulation of the effect of plasma aerodynamic actuation on improving film hole cooling pe
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