DF化学激光器反应动力学模型的简化及其有效性分析  

Simplification of a DF Chemical Laser Kinetic Model and Its Validity Analysis

作　　者：邵艳[1] 周进[1] 赖林[1] 雷静[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《光电工程》2010年第1期115-119,共5页Opto-Electronic Engineering

摘　　要：DF化学激光器涉及到多组分的高速化学反应流,组分、反应方程、速率常数的选择对计算结果有着重要影响。通过对DF化学激光器反应动力学模型的讨论,给出了简化模型的依据,并且分别运用几组简化反应模型进行数值模拟,分析与完全反应模型相比,简化对激光器小信号增益系数和DF激发态分子空间分布的影响。推荐了一个针对(NF3+H2+He)/D2燃料体系,DF化学激光器"冷反应"系统的11组分23方程简化模型,在很大程度上减少了计算量,有利于反应流场数值仿真的编程实现。Since the Deuterium Fluoride （DF） chemical laser utilizes a high-speed reacting flow with multiple chemical species,the choices of key species,reactions and rate constants have a great impact on the simulation result. Different types of DF chemical kinetic model are discussed,the simplified rules are given,and several simplified kinetic models are used in the numerical simulation of DF chemical laser. Through comparison between these results and the results under base kinetic model,the differences in the spatial distribution of small signal gains and DF （v） （v=0,1,2） are obtained. Finally,aimed at （NF3＋H2＋He）/D2 and ＂cold reaction＂ DF chemical laser system,an 11 species and 23 reaction simplified kinetic model is recommended,which can decrease computational costs and make the programming of reaction flowfield simulation more easier.

关 键 词：氟氘化学激光器 小信号增益系数 化学反应动力学 

分 类 号：TN248.5[电子电信—物理电子学]