Transient plasma effects on the autoignition of DME/O2/Ar and C3H8/O2/Ar mixtures
Transient plasma effects on the autoignition of DME/O2/Ar and C3H8/O2/Ar mixtures
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DOI：
10.1016/j.proci.2016.06.010
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
V. Gururajan;F. Egolfopoulos
中科院分区：
文献类型：
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作者：
V. Gururajan;F. Egolfopoulos
在零维恒压环境下，计算研究了瞬态等离子体放电对含氧氩气的二甲醚和丙烷混合物自燃特性的影响。将电子碰撞分解碳氢化合物的简单模型与描述二甲醚和丙烷低温氧化的详细化学动力学模型相叠加。结果表明，等离子体放电在低温下促进自燃的效果非常高。然而，在负温度系数区域，由于中性化学的复杂性，等离子体放电对自燃的促进效果较差。对不同混合物的有效程度进行了量化，并确定了显着差异。根据目前已知的低温烃动力学，对这些差异进行了解释。
The effects of transient plasma discharge on the autoignition characteristics of dimethyl ether and propane mixtures with oxygen and argon were investigated computationally in a zero-dimensional constant pressure environment. A simple model of hydrocarbon decomposition by electron collisions was superimposed on detailed chemical kinetic models that describe the low temperature oxidation of dimethyl ether and propane. The results suggest that the effectiveness of plasma discharges in promoting autoignition is very high at low temperatures. However, in the negative temperature coefficient region, the plasma discharge was determined to be less effective in promoting autoignition, as a result of complexity of the neutral state chemistry. The degree of effectiveness was quantified and was determined to differ significantly for different mixtures. An explanation for these differences is presented based on what is currently known about low temperature hydrocarbon kinetics.