水空两用发动机水反应推进系统设计与研究

The Design and Research on Water Ramjet Propulsion System of Air-Water Engine

摘要: 为实现发动机的水空两用，本文提出了一种新型的基于金属水反应的水下推进系统设计。本文结合对金属水反应冲压发动机的初步三维建模，选定了两个相互独立的结构参数作为研究对象，使用CFD软件进行了金属水反应燃烧室的流场模拟仿真。多组赋值后模拟得到了燃烧室平均温度、平均压强和平均速度随着选定结构参数变化的曲线图。本文对比分析了不同参数值的模拟结果，得到了选定结构参数对金属水反应及水冲压发动机推进效果的影响规律，在此基础上，综合考虑各方面要求，最终确定了两个研究参数较为合适的取值，确定了金属水反应冲压发动机结构模型。模拟结果可为水冲压发动机的下一步优化设计提供理论依据。

Abstract: In order to realize the air/water amphibious engine, a new design of underwater propulsion system based on metal/water reaction is proposed. We establish the preliminary 3D model for metal/water reaction ramjet and choose two mutually independent structural parameters as the objects of study. The flow field simulation of metal/water reaction combustion chamber is conducted with CFD software. The diagrams of the flow field parameters of combustion chamber varying with the change of the structural parameters are obtained. The structural model of metal/water reaction ramjet is determined via the comparison of simulation which could provide the theoretical basis for the further design and optimization of metal/water reaction ramjet.