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首页> 美国政府科技报告 >Development of Non-Equilibrium Plasma-Flame Kinetic Mechanism and its Validation Using Gliding Arc Integrated with Counterflow Burner
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Development of Non-Equilibrium Plasma-Flame Kinetic Mechanism and its Validation Using Gliding Arc Integrated with Counterflow Burner

机译：非平衡等离子体火焰动力学机理的研制及其与逆流燃烧器结合的滑动弧验证

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摘要

Kinetic enhancements of NOx, O3, and O2(a(exp 1)(Delta g)) on ignition and flame propagation of CH4 and H2, C3H8 and C2H4 flames by non- equilibrium plasma discharges in air were studied experimentally. The important kinetic enhancement pathways were identified. It was found that plasma produced NOx played a dominant role in the reduction of ignition temperature, particularly at low temperatures and low stretch rates. Moreover, the results showed that NOx catalytic effect mitigated the inhibiting effects of H2O and CH4 on ignition. A new method to isolate the kinetic coupling of O3 and O2(a(exp 1)(Delta g)) was proposed and the kinetic enhancement of O3 and O2(a(exp 1)(Delta g)) on flame speed was investigated quantitatively by using a lifted flame and advanced absorption and cavity ring down spectroscopy. It was found that O3 decomposition in the early stages of the preheating zone produced atomic O which reacted rapidly with the fuel to extract chemical heat release to increase flame speed. It was also found that O2(a(exp 1)(Delta g)) formation enhance combustion considerably via H+ O2(a(exp 1)(Delta g))=OH+O chain-branching reaction. The results will have a direct impact on the development of detailed plasma-flame kinetic mechanisms.

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