TY - JOUR
T1 - Effect of point electrod-generated electric field on premixed methane/air flames
AU - Yang, Xing
AU - Kang, Chan
AU - Liu, Jie
AU - Meng, Xiangwen
AU - Fang, Jianfeng
AU - Wu, Xiaomin
PY - 2014/2
Y1 - 2014/2
N2 - An experiment was conducted to study the effect of positive electric fields of point electrodes on the shape, propagation speed and the combustion pressure of premixed methane/air flames by altering the excess air ratio and the applied voltage. The results showed that the effect of ionic wind promoted the flame propagation, and made flames stretched in the horizontal direction with the propagation speed being increased. When the applied voltage was 12 kV, the maximum of propagation speed was increased by 55.7%, 13.2% and 46.6% at the excess air ratio of 0.8, 1.0 and 1.2, respectively. When the excess air ratio was 1.4, a turning point appeared because of the combination effect of ionic wind and corona discharge. The maximum of propagation speed was increased by 128.9% after the turning point. Under the influence of electric fields, the value of peak pressure was increased and the time of peak pressure was advanced by 14.1% and 16.6% when the excess air ratio was 1.2 and 1.4, respectively.
AB - An experiment was conducted to study the effect of positive electric fields of point electrodes on the shape, propagation speed and the combustion pressure of premixed methane/air flames by altering the excess air ratio and the applied voltage. The results showed that the effect of ionic wind promoted the flame propagation, and made flames stretched in the horizontal direction with the propagation speed being increased. When the applied voltage was 12 kV, the maximum of propagation speed was increased by 55.7%, 13.2% and 46.6% at the excess air ratio of 0.8, 1.0 and 1.2, respectively. When the excess air ratio was 1.4, a turning point appeared because of the combination effect of ionic wind and corona discharge. The maximum of propagation speed was increased by 128.9% after the turning point. Under the influence of electric fields, the value of peak pressure was increased and the time of peak pressure was advanced by 14.1% and 16.6% when the excess air ratio was 1.2 and 1.4, respectively.
KW - Combustion pressure
KW - Corona discharge
KW - Flame propagation speed
KW - Point electrodes
KW - Premixed flame
UR - https://www.scopus.com/pages/publications/84896991626
U2 - 10.3772/j.issn.1002-0470.2014.02.017
DO - 10.3772/j.issn.1002-0470.2014.02.017
M3 - 文章
AN - SCOPUS:84896991626
SN - 1002-0470
VL - 24
SP - 215
EP - 220
JO - Gaojishu Tongxin/Chinese High Technology Letters
JF - Gaojishu Tongxin/Chinese High Technology Letters
IS - 2
ER -