摘要
通过改变进气流量、气流背压 ,实验研究了航空发动机加力燃烧室筒体纵向波纹板隔热屏通道结构对换热特性的影响。对无孔、每波两排孔和每波六排孔三种结构的实验结果表明 ,波纹板的换热效果远高于平板型 ,随着波纹板上的孔排数增加 ,换热效果增大 ;波形对波纹板的壁温和Nu数影响很大 ,密流比对Nu数的影响与波孔排数有关。得到的纵向波纹通道的平均换热经验公式 。
To discuss heat transfer characteristics of heat shield of aeroengine afterburner,three types of longitudinal ripple tunnels were investigated The different structure of longitudinal ripple tunnels had influence on heat transfer characteristics through changing fluid rates of inlet and background press and so on Finally,experiential formulae of heat transfer of longitudinal ripple runnels were obtained and this conclusion may be used for the design of heat shield of aeroengine afterburner
出处
《推进技术》
EI
CAS
CSCD
北大核心
2002年第3期230-232,共3页
Journal of Propulsion Technology
关键词
航空发动机
加力燃烧室
隔热
波纹板
传热
气膜冷却
Aircraft engine
Afterburner
Thermal insulation
Corrugated pipe
Heat transfer
Film cooling
