Computational Simulation of Nanosecond Pulsed Discharge for Plasma Assisted Ignition
Computational Simulation of Nanosecond Pulsed Discharge for Plasma Assisted Ignition
复制标题
等离子体辅助点火纳秒脉冲放电的计算模拟
DOI：
10.1088/1742-6596/550/1/012051
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Igor V. Adamovich and Hideya Nishiyama
中科院分区：
文献类型：
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作者：
Hidemasa Tanaka;Igor V. Adamovich and Hideya Nishiyama
在10 atm和600 K下，对稀薄甲烷/空气混合气中纳秒脉冲针-针放电等离子体辅助燃烧进行了详细的二维数值模拟。从这项研究中可以清楚地看出，产生的自由基在电极附近局部较高，并且高密度自由基更广泛地分布在阳极侧而不是流光传播的阴极侧。在单个脉冲期间，电子能量分配已经被澄清。在相同的外加电压下，电子总能量随燃料当量比的增大而增大。纳秒脉冲放电显著提高了点火延迟期。
Detailed two dimensional numerical simulations of a nanosecond pulsed pin-to-pin discharge in a lean methane/air mixture were conducted under 10 atm and 600 K for plasma assisted combustion in internal combustion engines. It was clarified from this study that the produced radicals were locally higher in the vicinity of electrodes, and high density radicals are more widely distributed on the anode side rather than the cathode side which the streamer is propagating toward. The electron energy partition has been clarified during a single pulse. Total electron energy increases with fuel equivalent ratio under the same applied voltage. Pronounced enhancement of ignition delay has been shown by nanosecond pulsed discharge.