初始温度对氢-空气预混诱导湍流燃烧特性的影响  

Effects of Initial Temperatures on Induced Turbulence Combustion Characteristics of Pre-Mixed Hydrogen-Air

作　　者：刘福水[1,2] 康月 张小玉 吴晗[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京电动车辆协同创新中心,北京100081

出　　处：《内燃机工程》2018年第1期23-28,共6页Chinese Internal Combustion Engine Engineering

基　　金：高等学校学科创新引智计划项目(B12022)~~

摘　　要：通过在火焰传播路径上布置孔板实现诱导湍流燃烧,利用纹影技术和压力采集系统研究了初始温度对孔板诱导氢-空气预混湍流燃烧特性的影响。试验结果表明:穿越孔板前火焰传播速度略有下降,穿越孔板后火焰被诱导为湍流燃烧,火焰发展进程加快;随着初始温度的升高,最高燃烧压力和最大压升率减少,两者出现的时刻提前,添加孔板后的燃烧持续期变化率降低,但穿越孔板后的火焰传播速度的差异不显著。T h e tu rb u le n c e comb u s t io n was induced by a r ra n g in g a orifice p la te on th e flame p ro p ag a tio n path. The effect of ini t ial temperature on induced turbulence combust ion characterist ics of pre-mixturehydrogen-air was studied by the high-speed schlieren photograph system and pressure data acquisi t ion system. The experimental results show that the flame spreads down sl ight ly before the flame passthe orifice plate, an d th e n is induced into tu rb u le n t com b u s t io n wh ich acc ele rates th e flame dev elopm en t maximum pressure rise rate decrease in advance,and the change rate of the combust ion durat ion reduces after the addit ion of the orifice plate,but there is no significant difference in the flame propagat ion speed after the flame passes through the orifice plate.

关 键 词：氢气 诱导湍流 初始温度 燃烧特性 纹影 

分 类 号：TK407.9[动力工程及工程热物理—动力机械及工程]