低活性燃料旋转爆震燃烧机理研究进展

Research Progress on the Mechanism of Rotating Detonation Combustion of Low-Reactivity Fuels

连续旋转爆震发动机是爆震推进的一种实现形式,具有结构简单、燃烧效率高、推力稳定、应用形式多样等特点,近年来备受关注。低活性燃料由于化学反应活性差、胞格尺寸大,实现其高效旋转爆震燃烧的难度大。若要实现旋转爆震发动机工程应用,必须突破该核心关键技术。本文简要综述了低活性燃料旋转爆震的最新进展,分别从改善推进剂活性、燃烧室构型优化、冲压旋转爆震三个方面,探讨低活性燃料旋转爆震的燃烧组织机理,可为后续旋转爆震发动机研制提供借鉴与参考。

Continuous rotating detonation engine is one application of detonation-based propulsion,with the characteristics of simple structure,high combustion efficiency,stable thrust,and diverse application forms,which has received significant attention in recent years.Low-reactivity fuels are difficult to achieve efficient rotating detonation combustion,due to their poor chemical reactivity and large detonation cell size.To achieve the engineering application of continuous rotating detonation engine,it is necessary to break through this core key technology.This review article provides an overview of the latest progress in continuous rotating detonation of low-reactivity fuels.The combustion organization mechanism of continuous rotating detonation powered by low-reactivity fuels is discussed from three aspects:improving chemical reactivity,optimizing combustor configuration,and ramjet-based rotating detonation.This will provide reference and guidance for the development of subsequent continuous rotating detonation engines.