圆柱坐标系下连续旋转爆轰发动机的数值模拟

推进技术 ›› 2009, Vol. 30 ›› Issue (6): 717-721.

圆柱坐标系下连续旋转爆轰发动机的数值模拟

邵业涛,刘勐,王健平

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

发布日期:2021-08-15
基金资助:
国家自然科学基金(90305013)

Numerical simulation of continuous rotating detonation engine in column coordinate

State Key Lab. of Turbulence and Complex Systems/Dept. of Mechanics and Aerospace Engineering, Peking Univ., Beijing 100871, China;State Key Lab. of Turbulence and Complex Systems/Dept. of Mechanics and Aerospace Engineering, Peking Univ., Beijing 100871, China;State Key Lab. of Turbulence and Complex Systems/Dept. of Mechanics and Aerospace Engineering, Peking Univ., Beijing 100871, China

Published:2021-08-15

摘要/Abstract

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。

关键词: 发动机;爆轰;爆轰波;燃烧;数值仿真

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.

Key words: Engine;Detonation;Detonation wave;Combustion;Numerical simulation

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.