Characteristics of Plasma-Assisted Jet Flame and Its Application to Cross-Flow Methane-Air Combustion
Characteristics of Plasma-Assisted Jet Flame and Its Application to Cross-Flow Methane-Air Combustion
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DOI：
10.1109/tps.2016.2605441
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发表时间：
2016-09
影响因子：
1.5
通讯作者：
W. Wu;G. Ni;Q. Guo;P. Zhao;Lin Li;Y. Meng
中科院分区：
文献类型：
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作者：
W. Wu;G. Ni;Q. Guo;P. Zhao;Lin Li;Y. Meng
研究了一种用于等离子体辅助部分预混燃烧的横流非热电弧等离子体射流引燃燃烧器。结果表明，低温电弧等离子体对射流火焰中自由基的产生和甲烷氧化有明显的促进作用。此外，射流火焰的稳定性提高了等离子体的辅助，是不太可能被吹灭的水平气流。结果还表明，等离子体辅助射流火焰（plasma-JF）点火获得了较宽的贫燃极限，在最佳实验条件下，其贫燃极限接近0.45。研究发现，等离子体对燃烧的增强作用与等离子体-JF中OH自由基的发射强度有关。
A burner with a nonthermal arc plasma jet pilot flame in a cross-flow configuration was developed for plasma-assisted partial premixed combustion. It was demonstrated that the nonthermal arc plasma has significant effect on promoting the radical production and methane oxidation in jet flame. Moreover, the stability of the jet flame was improved by the plasma assistance, being less likely to be blown out by the horizontal airflow. The results also showed that broader lean flammability limit was obtained by plasma-assisted jet flame (plasma-JF) ignition, and it approached 0.45 under optimum experimental condition. Furthermore, it was found that better enhancement effects of plasma on combustion correspond to higher emission intensity of OH radical in plasma-JF.