【摘要】 基于三维多组分可压缩流动模型，结合Euler/Navier-Stokes方程与多步化学反应机理，探究了圆锥诱导斜爆震波的波面结构演化规律。结果表明，高Mach数(Ma=3.5)工况下激波与燃烧区通过连续压缩形成平滑过渡，而低Mach数(Ma=2.9)下呈现突变过渡特征，三维曲率效应与细胞状结构耦合，显著增强温度分布非均匀性。黏性效应通过热传导缩短起爆区长度，边界层回流区加速局部化学反应触发，同时动量扩散抑制初始扰动增长，延缓波面失稳。研究揭示了三维曲率与黏性作用的协同调控机制，为斜爆震燃烧室几何参数设计与流动稳定性控制提供了依据。更多还原

【Abstract】 This study investigated the structural evolution of cone-induced oblique detonation waves using a three-dimensional multicomponent compressible flow framework. Through coupled Euler/Navier-Stokes equations with finite-rate chemistry, distinct Mach number-dependent transition mechanisms were identified: at Ma=3.5, continuous compression establishes a smooth shock-to-detonation transition, whereas Ma=2.9 exhibits abrupt transition characteristics. The interaction between three-dimensional curvature effects and cellular detonation structures generates intensified temperature gradients. The viscous effects reduce the detonation initiation zone length through thermal conduction, while the boundary layer recirculation zone accelerates localized chemical reactions to trigger detonation. Meanwhile, momentum diffusion suppresses the growth of initial perturbations, thereby delaying the wave front instability. The study shows a synergistic regulation mechanism between three-dimensional curvature and viscous effects, providing fundamental insights for the geometric parameter design and flow stability control of oblique detonation combustors.更多还原