高马赫数射流预冷试验装置设计及试验验证

为加速中国射流预冷技术的研究，设计了1套基于高马赫数的射流预冷试验装置。对试验装置需满足的功能流程和设计需求进行了识别，明确了试验装置的组成；对试验段和水系统的结构进行了详细设计，提出了直杆型和圆环型2种不同喷杆布局的射流段，并对使用2种射流段时试验段的流场均匀性进行了分析，认为直杆型射流段的温度场和压力场分布更加均匀；选取几种典型的试验工况，对所设计的试验装置进行了温降特性、总压恢复系数以及流场均匀性等试验验证。结果表明：试验装置总体运行良好，结构设计合理，能够完成全工况下的射流预冷试验，其温降特性、总压恢复系数和流场均匀性符合试验预期，研究成果对中国航空领域射流预冷发动机的研制具有指导意义。

Design and Test Verification of Mass Injection Pre-compressor Cooling Test Device for High Mach Number

In order to accelerate the research of Mass Injection Pre-compressor Cooling(MIPCC)technology in China,a MIPCC test device for high mach number was designed.The functional process and design requirements of the test device were distinguished,and the composition of the test device was defined.The structures of the test section and the water system were designed in detail.Two jetflow sections with different boom layouts(straight rod type and ring type)were proposed,and the flow field uniformity of the test section was analyzed when the two jet-flow sections were used.The analysis showed that the distribution of temperature field and pressure field in the jetflow section of straight rod type was more uniform.Several typical test conditions were selected to verify the designed test device,mainly including temperature drop characteristics,total pressure recovery coefficient and flow field uniformity,The results show that the overall operation of the test device is good,its structure design is reasonable,and it can complete the MIPCC test under full working conditions.Its temperature drop characteristics,total pressure recovery coefficient and flow field uniformity meet the test expectations.The research results of this paper have guiding significance for the development of MIPCC engine of aviation field in China.