高速对流环境下硼颗粒点火和燃烧过程研究

项目名称： 高速对流环境下硼颗粒点火和燃烧过程研究

项目编号： No.51276194

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 能源与动力工程

项目作者： 胡建新

作者单位： 中国人民解放军国防科学技术大学

项目金额： 80万元

中文摘要： 含硼富燃料推进剂是一种高能量密度推进剂，在航天和导弹推进系统中有着广泛应用前景，但高速对流环境下硼颗粒点火和燃烧机理还不甚清楚。本项目以含硼富燃料推进剂固体火箭冲压发动机补燃室燃烧过程为研究对象，拟以试验为主，结合理论分析与数值模拟，开展高速对流环境下硼颗粒点火和燃烧过程研究。在国内外静止气氛下硼颗粒点火和燃烧过程研究基础上，建立高速对流环境下硼颗粒点火和燃烧过程试验方法，分析静止气氛和高速对流环境下不同直径的硼颗粒点火和燃烧过程中着火发生位置、燃烧火焰结构等关键参数变化规律，重点分析气流速度、环境压力等流体动力学因素对硼颗粒点火延迟时间、燃尽时间的影响。结合理论分析和试验研究，合理推断高速对流环境下硼颗粒点火和燃烧过程，建立其点火和燃烧模型，掌握高速对流环境下硼颗粒点火和燃烧过程控制机制，探讨有效促进硼颗粒快速点火和燃烧的方法，为开展硼颗粒在发动机中点火和燃烧过程研究奠定基础。

中文关键词： 硼颗粒；强迫对流；着火过程；燃烧过程；数值仿真

英文摘要： Boron-based fuel-rich propellant is of high-energy density propellant which has a widespread application prospect in the propulsion system of spacecrafts and missiles. However, the mechanism of the boron particle ignition and combustion process in high-speed convective flow is still not recognized. This problem will be studied in the secondary combustor simulator of the ducted rocket by experimental research, together with theoretical analysis and numerical simulation. Based on the relevant investigations of the boron particle ignition and combustion process in static atmosphere conducted, an experimental apparatus for studying the ignition and combustion mechanism of boron particle in high-speed convective flow is to be built. The regularities of key parameters such as the ignition position and the position of the flame front will be studied. But emphasis is to be placed on the study of the impact of hydrodynamic factors such as the flow speed and pressure on the ignition delay time and the combustion time. An ignition model and a combustion model for boron particle in high-speed convective flow will be developed subsequently based on the experimental results and theoretical analysis. The mechanism of the boron particle ignition and combustion process in high-speed convective flow will be obtained then. The stu

英文关键词： boron particle；forced convective；ignition process；combustion process；numerical simulation