Experimental study on the improvement of spray characteristics of aero-engines using gliding arc plasma  

作　　者：张磊 张登成 于锦禄 赵兵兵 屈新宇 陈一 程伟达 Lei ZHANG;Dengcheng ZHANG;Jinlu YU;Bingbing ZHAO;Xinyu QU;Yi CHEN;Weida CHENG(Aeronautics Engineering College,Air Force Engineering University,Xi’an 710038,People’s Republic of China;School of Power and Energy,Northwestern Polytechnical University,Xi’an 710003,People’s Republic of China;AECC Sichuan Gas Turbine Establishment,Chengdu 610599,People’s Republic of China)

机构地区：[1]Aeronautics Engineering College,Air Force Engineering University,Xi’an 710038,People’s Republic of China [2]School of Power and Energy,Northwestern Polytechnical University,Xi’an 710003,People’s Republic of China [3]AECC Sichuan Gas Turbine Establishment,Chengdu 610599,People’s Republic of China

出　　处：《Plasma Science and Technology》2023年第3期117-129,共13页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.91741112 and 52276142)。

摘　　要：A gliding arc plasma fuel atomization actuator suitable for aeroengines was designed,and a gliding arc plasma fuel spray experimental platform was built to address the fuel atomization problem in aeroengine combustion chambers.The spray characteristics for different airflows,fuel flows,and discharge voltages were analyzed using laser particle size analysis.The research shows that the fuel atomization effect is improved from the increased airflow.The decreased fuel flow not only reduces the injection pressure of the fuel but also changes the discharge mode of the gliding arc,which affects reductions in the discharge power and inhibits fuel atomization.Gliding arc discharges accelerate the breaking,atomization,and evaporation of fuel droplets while reducing the particle size,which increases the proportion of small droplets.Compared with the working conditions of plasma-assisted atomization without the gliding arc,the D0.5,D0.9,and average particle size of the fuel droplets are reduced by 4.7%,6.5%,and 4.1%,respectively,when the modulation voltage of the gliding arc power supply is 200 V.

关 键 词：gliding arc discharge spray characteristics droplet size distribution AEROENGINE 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程] O539[理学—等离子体物理]