中文摘要：

采用数值模拟的方法研究了超音速来流撞击圆锥体诱导的驻定爆轰波的结构和性能，讨论了不同初始来流温度下，爆轰波结构和波后压力的变化。结果表明，随着来流初始温度的降低，爆轰波的增压比逐渐增加，有利于提高驻定爆轰发动机的推进性能。当初始温度较高时，爆轰波阵面呈现光滑平直的形态，而初始温度较低时，爆轰波呈现出明显的三波点结构，且温度越低，三波点数量越多排列越紧密，这些具有较高压力的三波点对爆轰波波后压力的变化起到了重要作用。

英文摘要：

The numerical simulations were performed to study the standing detonation wave structure and performance induced by a supersonic inflow impinging on a cone. The variations of detonation wave structure and the pressure behind the wave at the different initial temperatures of inflow were analyzed. The results show that the ratio of pressure increase is enhanced along with the decrease of the initial inflow temperature, which is benefit from the improvement of propulsion performance of oblique detonation wave engine. At the higher initial inflow temperature, the detonation wave front shows a smooth shape, while at the lower initial temperature, the triple structures appear at the front. The lower initial temperature is, the more number of the serried triple points are. These triple points with higher pressure contribute to the pressure variations behind the standing detonation wave.