Ignition of high pressure lean H2:air mixtures along the multiple channels of nanosecond surface discharge

被引：38
|
作者：
Shcherbanev, Sergey A. [1 ]
Popov, Nikolay A. [2 ]
Starikovskaia, Svetlana M. [1 ]
机构：
[1] Univ Paris Sud, Univ Pierre & Marie Curie Paris 6, Sorbonne Univ, Lab Plasma Phys,CNRS,Ecole Polytech,Observ Paris, Route Saclay, F-91128 Palaiseau, France
[2] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Leninsky Gory, Russia
来源：
COMBUSTION AND FLAME | 2017年 / 176卷
关键词：
Plasma-assisted combustion; Nanosecond surface dielectric barrier discharge; Ignition of lean mixtures; PLASMA-ASSISTED IGNITION; AIR MIXTURES; COMBUSTION; DYNAMICS;
D O I：
10.1016/j.combustflame.2016.07.035
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The initiation of combustion of lean H2:air mixtures, ER = 0.5-0.6, by nanosecond surface dielectric barrier discharge (nSDBD) was studied experimentally at high initial pressures, P = 3-6 bar. The discharge was studied in different gas mixtures for the pressure range 1-12 bar. The ignition was initiated by two different discharge modes: streamer or filamentary nSDBD. The influence of the discharge structure and energy deposition on the ignition was demonstrated. Three regimes of multi-point ignition were observed: ignition with a few kernels, quasi-uniform ignition along the edge of the high voltage electrode and ignition along the plasma channels. The velocities of flame propagation were analyzed. The minimum ignition energy of the discharge and ignition delay time of combustion have been measured and analyzed with the help of kinetic numerical modeling. (C) 2016 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
引用
收藏
页码：272 / 284
页数：13
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