| 数值模拟气/气喷嘴速度比对燃烧性能的影响 |
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| 引用本文： | 袁磊,沈赤兵. 数值模拟气/气喷嘴速度比对燃烧性能的影响[J]. 国防科技大学学报, 2014, 36(5): 66-69 |
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| 作者姓名： | 袁磊 沈赤兵 |
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| 作者单位： | 国防科技大学高超声速冲压发动机技术重点试验室,湖南长沙,410073 |
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| 摘 要： | 为研究应用于全流量补燃循环发动机的不同气/气喷嘴得到的燃烧流场,通过求解NavierStokes方程组,对不同燃料与氧化剂速度比下的流动燃烧过程进行了数值计算,计算结果与实验结果吻合。仿真结果表明:增加速度比能使燃烧火焰面提前,燃烧效率变大。如果发动机的长度受到限制,可以适当增加速度比以实现高效燃烧。
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| 关 键 词： | 速度比 气/气喷嘴 燃烧流场 数值模拟 |
| 收稿时间： | 2013-01-18 |
Numerical simulation on effect of velocity ratio on gas/gas injector combustion performance |
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| YUAN Lei and SHEN Chibing. Numerical simulation on effect of velocity ratio on gas/gas injector combustion performance[J]. Journal of National University of Defense Technology, 2014, 36(5): 66-69 |
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| Authors: | YUAN Lei and SHEN Chibing |
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| Affiliation: | Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China;Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | In order to investigate the combustion flow field of gas/gas injector in full flow staged combustion cycle engine, the flow and combustion processes of different velocity ratio between fuel and oxidant were numerically simulated by solving the Navier-Stokes equations, the simulation results agree well with the experimental results. The simulation results show that the combustion efficiency increases and the combustion flame surface advances with increasing velocity ratio. If the length of the engine is restricted, effective combustion can be achieved by adding the velocity ratio appropriately. |
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| Keywords: | velocity ratio gas/gas injector combustion flow field numerical simulation |
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