作　　者： ; ; ; ;

机构地区： 南京理工大学能源与动力工程学院弹道国防科技重点实验室

出　　处： 《工程力学》 2011年第9期228-233,共6页

摘　　要： 利用二维均相反应Euler方程,结合高精度Roe/HLL混合格式与自适应网格技术,对爆轰波的非定常单次脉冲引射复杂流场进行了数值模拟。研究结果描述了超声速气流在引射管内的传播,以及爆轰波从主管喷出后,在引射管内反射与诱导二次爆轰过程,揭示了爆轰脉冲引射机理,并可为进一步开展爆轰波的非定常引射研究与工程装置设计提供重要依据。 Numerical simulations of the complicated flow field of an unsteady supersonic ejector have been performed with the use of two-dimensional, homogeneous and reactive Euler equations, and the combination of the high resolution hybrid Roe/HLL scheme with AMR （Adaptive Mesh Refinement） technology. Simulation results described the processes of both the shock wave propagation inside the ejector, and the secondary detonation wave inside the ejector induced by the reflection of shock waves. The ejecting mechanism of supersonic unsteady ejector has been discussed, which can provide important guidance for further investigations on the unsteady ejector and its engineering equipment design in future.

关 键 词： 非定常引射 超声速引射 爆轰 数值模拟 推进

领　　域： [理学] [理学]