等离子体射流点火的动力学机理分析

HE Liming; CHEN Gaocheng; ZHAO Bingbing; BAI Xiaofeng; QI Wentao; ZHANG Hualei

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等离子体射流点火的动力学机理分析

更新时间：2025-12-08

- 等离子体射流点火的动力学机理分析
- Vol. 44, Issue 3, Pages: 856-863(2018)
- 作者机构：
  
  1. 空军工程大学航空航天工程学院
  2. 95616部队
  3. 93256部队
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 March 2018，
  
  Published：2018
- 稿件说明：
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HE Liming, CHEN Gaocheng, ZHAO Bingbing, et al. 等离子体射流点火的动力学机理分析[J]. 2018, 44(3): 856-863.
DOI：

HE Liming, CHEN Gaocheng, ZHAO Bingbing, et al. 等离子体射流点火的动力学机理分析[J]. 2018, 44(3): 856-863. DOI：

摘要

为深入研究等离子体点火射流中主要活性粒子种类及摩尔分数对煤油/空气混合气燃烧过程的影响规律及主要影响途径

采用敏感性分析和化学反应速率（rate of production

ROP）分析方法对等离子体点火过程的化学反应机理进行了计算分析。计算结果表明:O原子、H原子、CH基能显著缩短煤油/空气混合气的点火延迟时间

且粒子摩尔分数越大对点火延迟时间的影响越显著;CH基通过基元反应R32和R34在缩短煤油/空气混合气点火延迟时间过程中占主导作用

在加入2%CH基后煤油/空气混合气的点火延迟时间为9.85μs

与基准工况相比缩短了68.2%;O原子和H原子对煤油/空气混合气的点火延迟时间的影响效果相当。

Abstract

In order to study the influences and the main pathways of type and mole fraction of the predominant reactive species on kerosene/air mixture in the combustion process

we calculated the chemical reaction mechanism of plasma jet ignition by using sensitivity analysis and ROP. The simulation results show that oxygen atom

hydrogen atom

and hydrocarbon radicals can reduce the ignition delay time of kerosene/air mixture significantly.The greater the particle mole fraction is

the shorter the ignition delay time will be. Hydrocarbon radicals play a dominant role in shortening the ignition delay time of kerosene/air mixture by the primitive reaction R32 and R34. When adding 2% hydrocarbon radicals

the ignition delay time is 9.85 microseconds

which is 68.2% shorter compared with the normal plasma ignition. The influence of oxygen atom on ignition delay time is the same as that of hydrogen atom.

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