| 同轴双剪切气-气喷嘴数值模拟 |
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| 引用本文： | 杜正刚,高玉闪,李茂,蔡国飙.同轴双剪切气-气喷嘴数值模拟[J].北京航空航天大学学报,2009,35(6):683-686. |
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| 作者姓名： | 杜正刚 高玉闪 李茂 蔡国飙 |
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| 作者单位： | 北京航空航天大学宇航学院,北京,100191;北京航空航天大学宇航学院,北京,100191;北京航空航天大学宇航学院,北京,100191;北京航空航天大学宇航学院,北京,100191 |
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| 基金项目： | 国家863基金资助项目 |
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| 摘 要： | 通过求解 k-ε 湍流模型的Navier-Stokes 方程组,对以气氢/气氧为推进剂的同轴双剪切喷嘴燃烧室进行数值模拟研究.研究结果表明:与传统的同轴剪切喷嘴相比,双剪切气-气喷嘴使推进剂有两个剪切燃烧面,且出口尺寸变化不大;双剪切喷嘴中心氢与氢总质量流量的比例是双剪切喷嘴的关键设计参数,当比例值为0.3时,能充分发挥双剪切喷嘴两个燃烧面的优势,使双剪切喷嘴能在大流量工况下实现高的燃烧效率.
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| 关 键 词： | 数值模拟 Navier-Stokes方程组 效率 |
| 收稿时间： | 2008-04-25 |
Numerical simulation of dual shear coaxial gas-gas injector |
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| Du Zhenggang,Gao Yushan,Li Mao,Cai Guobiao.Numerical simulation of dual shear coaxial gas-gas injector[J].Journal of Beijing University of Aeronautics and Astronautics,2009,35(6):683-686. |
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| Authors: | Du Zhenggang Gao Yushan Li Mao Cai Guobiao |
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| Institution: | School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | The turbulent Navier-Stokes equations in combination with the two equation k-ε turbulence model were used to simulate the flowfield in chambers of dual shear coaxial injector which the gaseous oxygen and hydrogen were used as propellants. The results of investigation display that: compared with traditional shear coaxial injector, the dual shear coaxial injector creates two shear combustion faces in chamber, and its outline varies a small amount. The ratio of center hydrogen mass flowrate to the total hydrogen mass flowrate is a key parameter for dual shear coaxial injector; at the ratio of 0.3, the advantage of two combustion surfaces is exerted completely. The dual shear coaxial injector could achieve a high combustion efficiency at the condition of large mass flowrate. |
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| Keywords: | numerical simulation Navier-Stokes equations efficiency |
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