航空学报2026，Vol.47Issue(17)：90-111,22.DOI:10.7527/S1000-6893.2026.33496
宽速域进气道粉末燃料预喷注流动调控机理
Flow control mechanism of powder fuel pre-injection in wide-speed-range inlet
摘要
Abstract
With the continuous expansion of the flight speed and altitude envelopes of air-breathing hypersonic ve-hicles,the core technical challenges faced by solid powder scramjets have shifted from simply pursuing improved blending combustion efficiency to deeper wave system regulation and flow control.Based on the Euler-Lagrange framework,a numerical model and method are established for compressible gas-solid two-phase turbulent flow,inves-tigates the flow control mechanism of powder fuel pre-injection in a wide-speed-range inlet,and analyzes the influence mechanisms of different incoming flow Mach numbers(4-7)and powder fuel transport solid-gas ratios(2.0-14.0)on the flow characteristics,performance,and powder fuel mixing process of the inlet.Through a systematic analysis of the interaction mechanism between the inlet wave system structure and the boundary layer under pre-injection,it is found that pre-injection can reconstruct the wave system structures of the internal and external compression sections,which improves the inlet pressurization performance while also reducing the total pressure recovery performance.By establishing the intrinsic correlation between the transport solid-gas ratio and the mixing efficiency of powder fuel,the formation mechanisms of the high vorticity region in the gas-solid two-phase shear layer,the high vorticity region in the wake,and the particle phase stagnation region at the shoulder are revealed,and the particle dispersion characteristics and the evolution laws of the vortex structure in the above regions are clarified.关键词
固体粉末超燃冲压发动机/预喷注/输运固气比/涡结构/掺混效率Key words
solid powder scramjet/pre-injection/transport solid-gas ratio/vortex structure/mixing efficiency分类
航空航天引用本文复制引用
罗世彬,杨大亮,田家琪,刘瑞,冯彦斌..宽速域进气道粉末燃料预喷注流动调控机理[J].航空学报,2026,47(17):90-111,22.基金项目
国家级项目 （）
中南大学研究生科研创新项目(2026ZZTS0287) National Level Project （2026ZZTS0287）
Postgraduate Research Innovative Project of Central South University(2026ZZTS0287) （2026ZZTS0287）
