激光诱导等离子体点火机理研究

项目名称： 激光诱导等离子体点火机理研究

项目编号： No.61275127

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 于欣

作者单位： 哈尔滨工业大学

项目金额： 82万元

中文摘要： 激光诱导等离子体点火（Laser-induced Plasma Ignition, LPI）技术是一种新型的点火方式，有望解决姿轨控火箭发动机电火花点火器高压工作、电磁兼容性差、寿命短、电极能量损失等问题。目前，关于LPI的研究工作主要集中于最小点火能量、点火成功率等宏观参量的研究，点火机理以热源点火模型为主。本项目通过同时引入热点火和化学动力学点火过程，建立含有热源和"活性"粒子源的点火动力学模型。采用理论和实验相结合的研究方法，开展甲烷/氧气混合燃气激光诱导等离子体点火机理的研究，获得激光诱导等离子体的物理化学特性，以及"活性"粒子对点火过程的影响规律；完善LPI机理和掌握影响点火过程的关键因素，推进对LPI点火过程的认识，为实际应用提供理论依据和指导。

中文关键词： 激光等离子体；激光等离子体点火；点火机理；点火能量；

英文摘要： Laser-induced plasma ignition (LPI) is a novel ignition technique which is developed to solve the problems of the current electronic ignition spark plugs in Attitude and Orbit Control rocket engine, such as high electronic voltage, bad electromagnetic compatibility, short lifetime, energy loss due to electrodes, and so forth. Most of current researches on LPI mainly focused on the macro ignition parameters, such as the minimum ignition energy and the ignition probability, and the ignition mechanism is basically about the heat soure ignition model. A ignition kinetic model containing heat source and active particle source will be set up by introducing the heat ignition and chemical kinetic ignition processes.The project will conduct theoretical and experimental researches on the laser-induced plasma ignition mechanism in methane/oxygen combustion system. The physicochemical characteristics of laser-induced plasma are expected to find out and the effect of active particles on the ignition process is expected to determined. By improving the LPI mechanism and figuring out the key factors affecting the ignition process, we hope to further the understanding of LPI ignition process and provide theoretical basis and guidance for practical application.

英文关键词： laser-induced plasma；laser-induced plasma ignition；ignition kinetics；ignition energy；