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中文摘要：
引言 超声速气流在燃烧室的驻留时间极短，要实现点火和稳定燃烧，必须采用强化混合和稳定火焰手段。因结构简单，强化混合和稳焰效果好，凹槽很早就已在超音速发动机实际中得到广泛应用，也有许多相关研究。90年代初，俄罗斯中央航空发动机研究院（Central Institute of Aviation Motors，CIAM）在二维氢燃料超燃冲压发动机模型中首次使用凹槽稳定器.
英文摘要：
Numerical investigation was conducted to understand the dynamic mechanism and effect of shear layer on the mixing and combustion of supersonic flow in a supersonic combustor with cavities. The complex wave structure including shock wave, expansion wave and the interaction of shock wave with shear layer could effectively and significantly increase mixing; and the mass and momentum exchanges between backflow zones in the cavities and main flow would enhance the ignition and stabilization of combustion.
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