| 圆柱坐标系下连续旋转爆轰发动机的数值模拟 |
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| 引用本文： | 邵业涛,刘勐,王健平.圆柱坐标系下连续旋转爆轰发动机的数值模拟[J].推进技术,2009,30(6):717-721. |
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| 作者姓名： | 邵业涛 刘勐 王健平 |
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| 作者单位： | 北京大学工学院,力学与空天技术系/湍流与复杂系统国家重点实验室,北京,100871 |
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| 摘 要： | 使用两步化学反应模型对连续旋转爆轰发动机(Continuous rotating detonation engine,CRDE)进行了二维数值模拟研究。数值计算获得了同轴圆管腔中间层曲面上连续爆轰的多个循环过程。分析了燃料入射、提前燃烧、爆轰波结构和波传播速度等几个关键问题。计算获得燃烧室内流场结构与之前实验研究结果定性符合。计算中燃料以最大1400m/s沿轴向入射,爆轰波可约以2400m/s沿周向连续循环传播。计算的燃烧室内爆轰波循环频率约为2300Hz。
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| 关 键 词： | 发动机 爆轰 爆轰波 燃烧 数值仿真 |
Numerical simulation of continuous rotating detonation engine in column coordinate |
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| SHAO Ye-tao,LIU Meng and WANG Jian-ping.Numerical simulation of continuous rotating detonation engine in column coordinate[J].Journal of Propulsion Technology,2009,30(6):717-721. |
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| Authors: | SHAO Ye-tao LIU Meng and WANG Jian-ping |
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| Institution: | (State Key Lab. of Turbulence and Complex Systems/Dept. of Mechanics and Aerospace Engineering, Peking Univ., Beijing 100871, China) |
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| Abstract: | A two-dimensional numerical simulation of the continuous rotating detonation engine(CRDE)was carried out with two-step chimerical kinetic model.Multi-cycle process of continuous rotating detonation(CRDE)was numerically obtained on coaxial cylinder.Some key problems about CRDE,such as fuel injection,pre-combustion,detonation structure and propagating velocity were discussed.The simulation results agree well with the previous experiment results.A detonation wave can continuously propagate around at about 2400 m/s with maximum injection velocity of 1400 m/s.A CRDE keeps a high frequency of about 2300 Hz in this simulated combustor of 7 mm in radius. |
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| Keywords: | Engine Detonation Detonation wave Combustion Numerical simulation |
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