首页> 美国政府科技报告 >Nanosecond Plasma Enhanced H2/O2/N2 Premixed Flat Flames
【24h】

Nanosecond Plasma Enhanced H2/O2/N2 Premixed Flat Flames

机译:纳秒等离子体增强H2 / O2 / N2预混平火焰

获取原文

摘要

The effect of nanosecond pulsed plasma discharges on a laminar, lean ( = 0.5) premixed H2/O2/N2 flame is studied at low pressure (25 torr), using a novel plasma-flame facility, non-intrusive laser diagnostics, and high-fidelity numerical simulations. Spatially-resolved quantitative OH mole fraction and temperature measurements are performed with and without a burst of 200 nanosecond discharge pulses using laser-induced fluorescence. Measured temperatures increase by approximately 20% in both the pre-heat and post-flame zones with the use of the plasma discharge. In addition, OH mole fractions increase by 100 - 500% in the preheat zone and an average increase of 40% in the post-flame gases. Simulations are conducted with a one-dimensional, multi-scale, pulsed- discharge model with detailed plasma-combustion kinetics to develop additional insight into the complex plasma and flame interactions. Good agreement between measured and predicted OH and temperature profiles provides confidence in the model framework. The reduced electric field, E/N, during each pulse varies inversely with number density. A significant portion of the input energy is expended to electron impact ionization in the high temperature regions downstream of the flame because of high E/N in this region (700-1000 Td).

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号