一种空气加热器的三维流场数值仿真  

Numerical Simulation of Three-dimension Flow Field in an Air-heater

作　　者：沈赤兵[1] 刘友朋[1] 吴海燕[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2011年第1期17-20,共4页Journal of National University of Defense Technology

摘　　要：为进行超燃冲压发动机试验,设计了空气加热器,对其内部流场进行了仿真并与热试车结果进行了比较验证;计算结果表明,所设计的加热器在结构方案和总体性能方面基本满足设计要求,喷注器喷入的空气降低了冷却面板的温度,燃烧室轴向入口空气能有效保护燃烧室内壁,仿真结果对于加热器的改进设计也起到一定的指导作用。An air-heater was designed for scramjet ground test.The internal flow field in the air-heater was investigated and the results were compared with the test data.The results show that the air-heater basically corresponds with the structure project and performance,the temperature of faceplate is reduced as a result of the air flow from injector-inlet,and the inner surface of the combustion chamber is protected by air flow from chamber-inlet. The results will be helpful for the optimization of the air-heater design.

关 键 词：超燃冲压发动机 空气加热器 数值仿真 地面试验 

分 类 号：V211.72[航空宇航科学与技术—航空宇航推进理论与工程]