| 引用本文: | 邵艳,周进,林志勇,等.基于敏感性分析的DF化学动力学模型的简化.[J].国防科技大学学报,2011,33(4):12-18.[点击复制] |
| SHAO Yan,ZHOU Jin,LIN Zhiyong,et al.Simplification of a DF Chemical Laser Kinetic Model Based on the Sensitivity Analysis[J].Journal of National University of Defense Technology,2011,33(4):12-18[点击复制] |
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| 基于敏感性分析的DF化学动力学模型的简化 |
| 邵艳, 周进, 林志勇, 赖林 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 基于两种燃料体系下的DF详细化学反应动力学模型，利用敏感性分析的方法，分别提出了相应的简化反应机理。简化过程中发现，仅考虑DF“冷反应”泵浦过程，忽略掉高振动激发态，忽略掉D2和DF分子的离解复合反应对整个系统影响不大。DF分子之间以及DF与D、D2、HF之间的能量转移反应具有较高的敏感性。简化机理在有效概括DF化学反应过程的同时尽量减少了反应组分和基元反应方程，很大程度上减少了计算量，更适合与三维流场数值仿真程序或软件进行耦合计算。 |
| 关键词: 氟氘化学激光器 敏感性分析 化学反应动力学 简化 平衡温度 |
| DOI： |
| 投稿日期：2010-12-11 |
| 基金项目:国家自然科学基金资助项目(11002158) |
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| Simplification of a DF Chemical Laser Kinetic Model Based on the Sensitivity Analysis |
| SHAO Yan, ZHOU Jin, LIN Zhiyong, LAI Lin |
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(College of Aerospace and Materials Engineering, National Univ.of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Based on the detailed DF chemical kinetic models of two different fuel systems, the relevant simplified chemical kinetic mechanisms were presented with the method of sensitivity analysis. It is found that considering the DF “cold reaction” pumping reactions, ignoring DF higher excited vibrational states and omitting the recombination-dissociation reactions have little effect on the total system. The energy transfer reactions in DF and DF deactivations by D, D2 and HF exhibits strong sensitivity to the chemical kinetics. Compared with the detailed mechanism, the simplified mechanism describes the general DF combustion process effectively, and at the same time reduces the species, element reactions and computational costs to a great extent. Therefore it fits more with coupling with three-dimensional flowfield numerical simulation code or software. |
| Keywords: DF chemical laser sensitivity analysis chemical kinetic model simplification equilibrium temperature |
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