楔面角度扰动对斜爆轰结构的影响研究

为研究楔面角度扰动对斜爆轰波结构的影响，采用两步法反应模型建立了二维反应Euler方程组，在LevelSet函数中引入时间变量用于描述运动楔面边界，开展了楔面角度扰动对斜爆轰影响过程的数值模拟，仿真结果表明:楔面角度增加时，诱导区变短，突跃过渡斜爆轰演变成平滑过渡斜爆轰，斜爆轰波角度增加并向上游移动；楔面角度减小时，诱导区变长，平滑过渡斜爆轰演变成突跃过渡斜爆轰，斜爆轰波角度减小并向下游移动；演变过程包含复杂的波系变化. 

Influence of Wedge Angle Disturbance on the Structure of Oblique Detonation

To study the influence of wedge angle disturbance on the structure of oblique detonation, two-step reaction model was used to construct two dimensional reaction Euler equations. The time variable was introduced into the LevelSet function to describe the moving wedge. The influence of wedge angle disturbance on oblique detonation was simulated, and simulation results are that: as the wedge angle increases, the induction length becomes shorter, the structure of oblique detonation changes from abrupt transition to smooth transition, the angle of oblique detonation increases and the oblique detonation moves upstream; as the wedge angle decreases, the induction length becomes longer, the structure of oblique detonation changes from smooth transition to abrupt transition, the angle of oblique detonation decreases and the oblique detonation moves downstream. Complex wave structure evolution will occur in the whole process.