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首页> 外文期刊>Acta astronautica >Experimental investigation on the gliding arc plasma supported combustion in the scramjet combustor
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Experimental investigation on the gliding arc plasma supported combustion in the scramjet combustor

机译：汽轮燃烧器中的滑动弧等离子体支撑燃烧的实验研究

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摘要

A gliding arc discharge with an averaged power of 200 W at atmospheric pressure was used to support the supersonic combustion of ethylene fuel with an inflow speed of Mach number 2.92. The instantaneous wall pressure of the combustion chamber and the high-speed CH* chemiluminescence imaging were simultaneously measured to show the characteristics of the gliding arc plasma assistance combustion. The results show that the gliding arc increases the average wall pressure. Specifically, as for the fuel injector near the front step of the cavity, the wall pressure downstream of the aft ramp wall increased at different global equivalence ratios, even increasing the wall pressure upstream of the fore wall of the cavity at an equivalence ratio of 0.1. For the injector away from the fore wall of the cavity, the presence of the gliding arc promotes the wall pressure downstream of the aft ramp wall. In the presence of the gliding are, the emission intensity and the area of the flame in the cavity are weakened at a low global equivalence ratio (0.10-0.12), whereas the effect is not significant at a range of the total equivalence from 0.15 to 0.2. In the high equivalence ratios from 0.22 to 0.29, the gliding arc plasma plays a significant role in combustion enhancement owing to an increase in the emission intensity and the area of the cavity flame.
机译：在大气压下，具有200W的平均功率的滑动电弧放电用于支撑乙烯燃料的超音速燃烧，以Mach编号2.92的流入速度。同时测量燃烧室和高速CH *化学发光成像的瞬时壁压，以显示滑动弧等离子体辅助燃烧的特性。结果表明，滑动弧增加了平均壁压力。具体地，如燃料喷射器在腔的前台阶附近，后斜面壁下游的壁压以不同的全局等效比增加，甚至以0.1的等效比增加腔的前壁上游的壁压。对于远离腔的前壁的喷射器，滑动弧的存在促进尾部下游的壁压。在滑动的存在下，腔中的发射强度和火焰的面积以低的全局等效比（0.10-0.12）削弱，而效果在0.15到0.15的总等值范围内不显着。 0.2。在0.22至0.29的高等效比率中，由于腔火焰的发射强度和面积的增加，滑动弧等离子体在燃烧增强中起着重要作用。

著录项

  • 来源
    《Acta astronautica》 |2020年第12期|133-141|共9页
  • 作者

    Wang Wei-Zhen; Jia Min; Feng Rong; Zhu Jia-Jian;

  • 作者单位

    Air Force Engn Univ Sci & Technol Plasma Dynam Lab Xian 710038 Peoples R China;

    Air Force Engn Univ Sci & Technol Plasma Dynam Lab Xian 710038 Peoples R China;

    Natl Univ Def Technol Sci & Technol Scramjet Lab Changsha 410073 Hunan Peoples R China;

    Natl Univ Def Technol Sci & Technol Scramjet Lab Changsha 410073 Hunan Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Plasma-assisted combustion; Gliding arc plasma; Scramjet; Cavity;

    机译：等离子体辅助燃烧;滑翔弧等离子体;炒叶;腔;

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