旋转爆轰燃烧室多波模态的演变机制及预测和控制方法研究

旋转爆轰发动机由于其潜在的技术优势，近些年得到国内外的广泛关注，并已逐渐开始从基础研究向工程应用研究转变。但由于目前对燃烧室内多波模态的形成和演变机制尚不明确，导致很难预测和控制燃烧室内的工作模态，从而影响燃烧室性能，这也严重制约着旋转爆轰燃烧室工程设计方法的提出，不利于旋转爆轰发动机向工程应用推广。因此，本项目拟针对多波模态的演变机制这一科学问题展开研究，通过考察质量流率、当量比、反应物类别、燃烧室出口背压、反应物喷注结构参数等因素，重点分析多波模态形成、退化的原因和条件，总结多波模态的主要影响因素及其影响规律，并分析这些影响因素的内在关联性，构建旋转爆轰波预测模型，筛选多波模态的控制变量，提出多波模态控制方法，明确其控制规律，实现燃烧室内多波模态的有效预测和控制，为RDE燃烧室设计提供理论依据，对推动RDE从基础研究向工程应用转变具有重要科学意义。

In recent years, rotating detonation engine has received wide attention at home and abroad because its potential advantages, and the study of RDE is beginning to transform from basic into engineering. But the prediction and control of operating model is difficult in rotating detonation chamber because the evolvement mechanism of multiple-detonation waves is not clear, which affect the performance of rotating detonation chamber, restrict severely the design of rotating detonation chamber, and make against the transformation of RDE into engineering. So, the evolvement mechanism of multiple-detonation waves will be carried out in this project. Based on the analysis of influence factors, such as mass flow rate, equivalence ratio, reactant category, back pressure of the combustor and injection structure of reactant, the re-initiation and quenching of rotating detonation wave will be observed. The influence factors of multiple-detonation waves and its rule will be summarized. The relationship of these influence factors will be analyzed, and the prediction model will be set up. Based on selected control variables, the control method of multiple-detonation waves will be proposed, and the control rule will be got. The prediction model and control method of multiple-detonation waves will be realized. This project will provide guidances for design of rotating detonation chamber, and will have important significance for the transformation of RDE from basic into engineering .