旋转爆震波起始是RDE稳定工作的前提。采用低能量点火，通过DDT过程获得旋转爆震波是一种简单、高效的起始方式，但目前对相关机理的认识尚不清楚。.本项目通过实验和数值研究相结合，拟对低能量点火方式下圆盘形RDE燃烧室内的DDT过程、爆震波向旋转爆震波演变过程展开研究，从侧向膨胀、横向射流、反应物活性等因素入手，分析RDE中火焰、激波的形成及传播特点，探讨激波与火焰的相互作用及耦合机制；明确爆震波向旋转爆震波演变的条件及影响因素，从而揭示基于DDT过程的旋转爆震波起始机理。项目成果有助于理解低能量点火方式下旋转爆震波的形成、多波头产生以及旋转爆震波湮灭后再起爆等现象，并对发展简单、高效的旋转爆震波起始方法具有重要意义。

The initiation of rotating detonation wave is prerequisite to obtain steady operation of RDE. Rotating detonation wave can be initiated by a low ignition energy and deflagration to detonation transition (DDT). This initiation way is simple and efficient, but it is unclear about the initiation mechanism..The DDT in plane-radial combustor of RDE and detonation wave to rotating detonation wave transition will be investigated by experiments and numerical simulations. From the factors such as lateral expansion, lateral jet and reactants activity, the formation and propagation characteristics of flame and shock wave in RDE are analyzed. The interaction and coupling mechanism between shock wave and flame are discussed. The conditions and factors of detonation wave to rotating detonation wave transition are researched. The initiation mechanism of rotating detonation wave based on DDT will be obtained. The research results will make contribute to understand initiation mechanism of rotating detonation wave with low ignition energy, the generation of multi-wave, the reinitiation of the rotating detonation wave and establish simple and efficient initiation way.