连续波DF/HF化学激光器喷管中氟原子复合计算  

Numerical Investigation of Fluorine-atom Recombination Model in CW DF/HF Chemical Laser Nozzle

作　　者：李兰[1] 华卫红[1] 袁圣付[1] 姜宗福[1] 

机构地区：[1]国防科技大学光电科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2008年第6期43-46,共4页Journal of National University of Defense Technology

摘　　要：氟原子是连续波DF/HF化学激光器泵浦反应的重要参与者,其浓度分布尤其直接影响冷反应型激光器的泵浦效率及激射强度。在参与反应之前,氟原子将受到三体复合和壁面复合因素的影响而部分复合为氟分子。研究该因素对氟原子浓度的影响对激光器的分析优化是十分重要的。已有一定的实验方法可对其浓度进行测量研究,并建立了理论模型描述。将其与计算流体力学方法相结合对氟原子分布进行计算,研究了该方法的有效性,并对不同收缩段型面下氟原子复合进行了计算研究。As one of the most important components participating in the pumping reaction of CW DF/HF chemical laser, the distribution of fluorine-atom has direct influence on pumping end lasing especially for the cold-reaction operation. Because of free-stream recombination end wall-catalytic recombination, some of the fluorine atoms will be recombined with molecules before entering into the reaction region. It＇s very important to investigate fluorine-atom＇ distribution for the analysis end optimization of lasers. Some experimental methods have been developed end theoretical model has been established. The model and general computational fluid dynamics （ CFD） tool were combined to compute the fluorine atom：distribution. Its validity was tested, end cases under different converge contour were numerically studied.

关 键 词：DF/HF化学激光器 氟原子 壁面复合 计算流体力学 

分 类 号：TN248.5[电子电信—物理电子学]