| 引用本文: | 李兰,华卫红,袁圣付,等.连续波DF/HF化学激光器喷管中氟原子复合计算.[J].国防科技大学学报,2008,30(6):43-46.[点击复制] |
| LI Lan,HUA Weihong,YUAN Shengfu,et al.Numerical Investigation of Fluorine-atom Recombination Model in CW DF/HF Chemical Laser Nozzle[J].Journal of National University of Defense Technology,2008,30(6):43-46[点击复制] |
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| 连续波DF/HF化学激光器喷管中氟原子复合计算 |
| 李兰, 华卫红, 袁圣付, 姜宗福 |
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(国防科技大学 光电科学与工程学院，湖南 长沙 410073)
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| 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。 |
| 关键词: DF/HF化学激光器 氟原子 壁面复合 计算流体力学 |
| DOI： |
| 投稿日期：2008-07-08 |
| 基金项目: |
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| Numerical Investigation of Fluorine-atom Recombination Model in CW DF/HF Chemical Laser Nozzle |
| LI Lan, HUA Weihong, YUAN Shengfu, JIANG Zongfu |
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(College of Opto-electronic Science and Engineering，National Univ. of Defense Technology，Changsha 410073，China)
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| Abstract: |
| 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 and lasing especially for the cold-reaction operation. Because of free-stream recombination and 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 and optimization of lasers. Some experimental methods have been developed and 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, and cases under different converge contour were numerically studied. |
| Keywords: DF/HF chemical laser fluorine atom wall-recombination CFD |
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