滑动弧等离子体强化甲烷/空气扩散火焰燃烧研究  

Study on Gliding Arc Plasma Enhancing Methane/Air Diffusion Flame Combustion

作　　者：狄辉 车学科 钟战 吴祥东 朱少鹏 DI Hui;CHE Xue-Ke;ZHONG Zhan;WU Xiang-Dong;ZHU Shao-Peng(Department of Aerospace Science and Technology,Space Engineering University,Beijing 101416,China)

机构地区：[1]航天工程大学宇航科学与技术系,北京101416

出　　处：《机电产品开发与创新》2021年第6期5-7,共3页Development & Innovation of Machinery & Electrical Products

基　　金：国家自然科学基金(51777214)。

摘　　要：为评估滑动弧等离子体对甲烷/空气正扩散火焰的点火助燃效果,采用定常和非定常两种放电模式,保持甲烷流量不变,对不同空气流量、占空比下的甲烷/空气正扩散火焰进行实验测量。实验结果表明:滑动弧等离子体可以增大甲烷/空气正扩散火焰的点火极限,能够点燃熄灭火焰,并使火焰稳定燃烧;在两种放电模式下,将空气流量从5L/min增加到9L/min,火焰高度降低,CH基的生成增加;在非定常模式下,将交流电源放电占空比从10%增加到90%,火焰高度和CH基生成均会增加。In order to evaluate the ignition and combustion-supporting effect of the sliding arc plasma on the methane/air positive diffusion flame,two discharge modes,steady and unsteady,are used to keep the methane flow constant.For methane/air positive diffusion flames with different air flow rates and duty cycles Perform experimental measurements.The experimental results show that the gliding arc plasma can increase the ignition limit of the methane/air positive diffusion flame,ignite the flame,and make the flame burn stably;in the two discharge modes,the air flow rate is increased from 5L/min to 9L/min,the flame height decreases and the generation of CH radicals increases;in the unsteady mode,increasing the AC power discharge duty cycle from 10%to 90%will increase the flame height and the generation of CH radicals.

关 键 词：滑动弧等离子体 强化燃烧 扩散火焰 火焰高度 CH基 

分 类 号：O539[理学—等离子体物理]