摘要
根据超燃发动机燃烧室的热环境参数进行传感器冷却换热及应变计算,研制了一种用于燃烧室高温环境直接测量摩阻的传感器,解决了传感器的高温隔热、冷却和灵敏度等问题,并进行了标定和校核。通过CARDC电弧加热器开展了初步的测试试验和数值模拟,结果表明,数值模拟和测试的摩阻相差达20%,雷诺比拟因子与文献中0.7-1.3符合较好。
Heat transfer and strain of sensors were calculated based on the thermal environment parameters of seramjet combustion chamber. A sensor was developed for directly measuring friction of the combustion chamber in a high-temperature environment. High-temperature insulation, cooling and sensitivity of the sensor were solved. Meanwhile it was calibrated and verified. Simulation and preliminary tests by CARDC arc heater show that the difference of friction between simulation and test was up to 20%, Reynolds analogy factor of 0.7 to 1.3 was in good agreement with that of literatures.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2016年第6期1175-1181,共7页
Journal of Propulsion Technology
关键词
超燃发动机
高温
摩阻
Scramjet
High temperature
Skin friction
