| 激光激活氧分子作用下CH_4/O_2反应数值模拟 |
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| 引用本文： | 于欣,邵强,彭江波,杨鹏,孙锐.激光激活氧分子作用下CH_4/O_2反应数值模拟[J].燃烧科学与技术,2009,15(6). |
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| 作者姓名： | 于欣 邵强 彭江波 杨鹏 孙锐 |
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| 作者单位： | 1. 哈尔滨工业大学可调谐激光技术国家重点实验室,哈尔滨,150080
2. 哈尔滨工业大学燃烧工程研究所,哈尔滨,150001 |
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| 基金项目： | 黑龙江省自然科学基金资助项目 |
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| 摘 要： | 基于化学动力学模型GRI-Mech3.0机理,利用CHEMKIN4.0软件柱寒流反应器模型模拟了激光作用下CH_4/O_2燃烧反应过程.结果表明,通过激光作用控制反应过程,利用特定波长的激光将氧分子激发到相应的亚稳态,能够有效减少化学反应延迟时间.在波长762 nm、光强10 kW/cm~2(温度1 000 K,压强10~5 Pa)条件下,反应延迟时间由0.23 s减小为0.04 s.特别是在温度及压强较低情况下,反应延迟时间明显减小,具有较好的优化效果.
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| 关 键 词： | 激光激活氧分子 CH_4/O_2燃烧 化学反应动力学 点火延迟时间 |
Numerical Simulation of CH_4/O_2 Reaction by Laser Activation of Oxygen Molecule |
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| YU Xin,SHAO Qiang,PENG Jiang-bo,YANG Peng,SUN Rui.Numerical Simulation of CH_4/O_2 Reaction by Laser Activation of Oxygen Molecule[J].Journal of Combustion Science and Technology,2009,15(6). |
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| Authors: | YU Xin SHAO Qiang PENG Jiang-bo YANG Peng SUN Rui |
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| Affiliation: | YU Xin1,SHAO Qiang1,PENG Jiang-bo1,YANG Peng2,SUN Rui2(1.National Key Laboratory of Tunable Laser Technology,Harbin Institute of Technology,Harbin 150080,China,2.Research Institute of Combustion Engineering,Harbin 150001,China) |
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| Abstract: | Based on chemical kinetic mechanism GRI-Mech3.0,CH4/O2 combustion under laser-induced activation of oxygen molecule was studied in a plug flow reactor of CHEMKIN 4.0.The results show that excitation of metastable oxygen by laser with a specific wavelength makes it possible to reduce of delay time chemical reaction.Under the wavelength of 762 nm and the light intensity of 10 kW/cm2(temperature 1 000 K,pressure 105 Pa),reaction delay time was reduecd from 0.23 s to 0.04 s,and aspecially at low temperature and... |
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| Keywords: | laser activation of oxygen molecule CH_4/O_2 combustion chemical reaction kinetics ignition delay time |
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