采用液体燃料的斜爆震燃烧室具有燃烧自增压和热效率高等优点。气液两相斜爆震涉及液雾、湍流、激波、化学反应等多个物理化学过程的相互作用，物理机理复杂，起爆、自持传播以及燃烧稳定性等规律尚未清晰。研究两相斜爆震的触发机制以及燃烧稳定性，对于斜爆震燃烧室的优化设计与性能分析具有重要意义。本项目将基于连续相流体欧拉-离散相液滴拉格朗日的混合模型，发展适用于高速可压缩两相流动与爆震燃烧的高精度数值方法，实现气液两相斜爆震燃烧过程的精细化数值模拟；基于所得数据，研究气液两相斜爆震燃烧的起爆、自持结构与燃烧稳定性的物理机理，总结斜爆震燃烧室工作包线内不同来流与喷雾参数下气液两相斜爆震燃烧机理与影响规律，为气液两相斜爆震燃烧的工程应用提供理论依据。

Oblique detonation combustion chamber with liquid fuel has the advantages of pressure-gain combustion and high thermal cycling efficiency. The gas-liquid two-phase oblique detonation inside the combustion chamber involves complicated physicochemical processes, such as spray, turbulence, shock wave and chemical reaction. The physical mechanisms behind them are complicated, and the influence regularities for the detonation initiation, self-sustaining propagation and combustion stability are not clear. Studying the triggering mechanism and combustion stability of oblique detonation is of great importance to the development of accurate numerical model as well as further optimization design and performance analysis for oblique detonation combustion chamber. Based on the Eulerian-Lagrangian framework, the present project is intended to develop high-order accuracy numerical methods for high-speed compressible two-phase flow and detonation, and to realize the numerical simulation for gas-liquid two-phase oblique detonation with high-resolution behavior. The physical mechanisms of the initiation, self-sustaining structure and combustion stability of gas-liquid two-phase oblique detonation will be studied based on the paramount simulation data. The combustion mechanisms and influence regularities will be summarized for different inflow conditions and spray parameters within the working envelope of oblique detonation combustion chamber. Theoretical guidance will be provided for the engineering application of gas-liquid two-phase oblique detonation combustion.