2元超声速混压式进气道的设计及进-发匹配分析  

Design for Two-Dimensional Supersonic Mixed Compression Inlet and Analysis of Inlet-Engine Matching

作　　者：余天宁 吴虎[1] 

机构地区：[1]西北工业大学动力与能源学院,西安710114

出　　处：《航空发动机》2016年第3期43-47,共5页Aeroengine

摘　　要：为了更好解决航空发动机进气道的设计和匹配问题,应用多目标遗传算法进行2元超声速混压式进气道的优化设计。以流场数值计算结果为基础,分析了该进气道在不同来流马赫数、背压条件下的工作状态和流场特性,并得出该不可调2元超声速混压式进气道在不同来流马赫数下对流量系数φ的特性曲线图,将其特性数据导入某型涡轮喷气发动机的总体计算程序中,完成了进-发匹配分析,同时给出了进-发匹配规律。结果表明:不可调2元超声速混压式进气道在设计点具有较好的匹配性能,但具有良好匹配特性的工作范围有限。In order to preferably solve problems of the design and matching of inlet, the multi-target Genetic Algorithm（GA） was used to optimize the design of two-dimensional supersonic mixed compression inlet. Based on the result of numerical simulation, the working status and flow field characteristics of the inlet under different Mach number and back pressure conditions were analyzed. A characteristic curve graph about φ（discharge coefficient） of the nonadjustable two-dimensional supersonic mixed compression inlet was drawn, and characteristic data of the inlet was imported into a calculating program of a turbojet engine. The inlet-engine matching was analyzed and the law of inlet-engine compatibility was given. The results show that the nonadjustable inlet takes good matching performance at the design point while the working range is limited.

关 键 词：超声速进气道 优化设计 进-发匹配 数值模拟 航空发动机 

分 类 号：V228.7[航空宇航科学与技术—飞行器设计]