某型发动机非加力情况下收-扩尾喷管流动特性研究  

The flow characteristics of the convergent-divergent nozzle of a turbofan engine under non-afterburning condition

作　　者：杨晓[1] 望佳 齐海帆[1] 

机构地区：[1]中国飞行试验研究院,陕西西安710089

出　　处：《现代机械》2016年第3期83-86,共4页Modern Machinery

摘　　要：针对某型涡扇发动机的收-扩尾喷管模型在加力不接通试验工况下的流动特性,通过建立模型,进行相关的数值计算研究,获得了不同喉道面积、面积比和尾喷管落压比条件下的收-扩尾喷管模型的流量系数和推力系数数据及其变化规律,为发动机地面台架标定试验和飞行试验中发动机进口空气流量和标准净推力的确定提供了基础数据。In this study,we analyzed the flow characteristics of the convergent- divergent nozzle of a turbofan engine under non- afterburning condition. We established a model,carried out numerical calculation,and obtained the flow coefficient and the thrust coefficient of the nozzle model and their changing rules under different throat area,area ratio and blowdown ratio. This study has provided basic data for the determination of the inlet air flow and the standard net thrust of the engine in bench tests and flight tests.

关 键 词：收-扩尾喷管 数值计算 流量系数 推力系数 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]