摘要
给出了一种再生冷却结构非定常换热计算模型,能够支撑超燃冲压发动机再生冷却结构设计和试验研究。对发动机达到热平衡时间和非正规阶段温升时间的计算和测量结果进行了对比分析,计算比较了发动机初始壁面温度分别为300和800 K时达到热平衡的时间。研究表明,建立的再生冷却结构非定常换热计算模型具有一定的适用性,能够用于超燃冲压发动机的传热特性分析。
In order to support the regenerative cooling structure design and experiment of scramjet,an analytical model of unsteady heat exchange is constructed.The calculated and experimentally measured thermal equilibrium times under water cooling condition are compared.The calculated irregular temperature increasing time is obtained using the analytical model and compared with experimental values.It is found that the thermal equilibrium time can be decreased if the scramjet is preheated to 800 K before test.The research shows that the analytical model is applicable to heat transfer analysis of the regenerative cooling scramjet.
作者
张若凌
张磊
王想义
蒋劲
顾磊
ZHANG Ruoling;ZHANG Lei;WANG Xiangyi;JIANG Jin;GU Lei(Science and Technology on Scramjet Laboratory of Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang 621000,China)
出处
《实验流体力学》
CAS
CSCD
北大核心
2023年第2期62-67,共6页
Journal of Experiments in Fluid Mechanics
基金
国家自然科学基金项目(51976233)
国家科技重大专项(2017-Ⅲ-0005-0030)。
