再生冷却结构非定常换热计算研究  

Computational investigation of unsteady heat exchange on regenerative cooling structure

作　　者：张若凌[1] 张磊[1] 王想义 蒋劲[1] 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)

机构地区：[1]中国空气动力研究与发展中心高超声速冲压发动机技术重点实验室,绵阳621000

出　　处：《实验流体力学》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)。

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.

关 键 词：再生冷却 非定常换热 超燃冲压发动机 建模 

分 类 号：V411.7[航空宇航科学与技术—航空宇航推进理论与工程]