多管脉冲爆震发动机流场数值研究

推进技术 ›› 2007, Vol. 28 ›› Issue (6): 674-678.

多管脉冲爆震发动机流场数值研究

刘建文,钟诚文,赵书苗

西北工业大学翼型叶栅空气动力学国家重点实验室陕西西安710072;西北工业大学高性能计算研究与发展中心;陕西西安710072;北京动力机械研究所;北京100074;西北工业大学翼型叶栅空气动力学国家重点实验室陕西西安710072;西北工业大学高性能计算研究与发展中心;陕西西安710072;西北工业大学翼型叶栅空气动力学国家重点实验室陕西西安710072;西北工业大学高性能计算研究与发展中心;陕西西安710072;北京动力机械研究所;北京100074

发布日期:2021-08-15
基金资助:
国防科技重点实验室基金(9140C4201020602)

Numerical investigation of multi-tube pulse detonation engine

National Defence Key Lab.of Airfoil and Cascade Aero-dynamic,Northwestern Polytechnical Univ.,Xi’an 710072,China;Center for High Performance Computing,Northwestern Polytechnical Univ.,Xi’an 710072,China;Beijing Power Machinery Research Inst.,Beijing 100074,China;National Defence Key Lab.of Airfoil and Cascade Aero-dynamic,Northwestern Polytechnical Univ.,Xi’an 710072,China;Center for High Performance Computing,Northwestern Polytechnical Univ.,Xi’an 710072,China;National Defence Key Lab.of Airfoil and Cascade Aero-dynamic,Northwestern Polytechnical Univ.,Xi’an 710072,China;Center for High Performance Computing,Northwestern Polytechnical Univ.,Xi’an 710072,China;Beijing Power Machinery Research Inst.,Beijing 100074,China

Published:2021-08-15

摘要/Abstract

摘要： 针对二维带有收敛扩张喷管的双管脉冲爆震发动机(PDE),采用并行的时空守恒元和解元(CE/SE)方法对单管点火、双管同时点火和不同喉道面积情况下的爆震流场进行了数值模拟。化学反应模型采用H2和O2的8组分34基元反应。计算发现,单管点火情况下传入旁通爆震管的流场可以引爆其中的可燃气体;多管PDE内流场之间的相互作用使管内的压强处于比较高的状态;增大喉道面积削弱了多管PDE流场之间的相互影响,同时减小了封闭端面的压力,从而导致发动机性能下降。

关键词: 爆震;时空守恒元和解元方法+;基元化学反应+;并行计算;数值仿真

Abstract: The parallel space-time conservation element and solution element(CE/SE) method was used to simulate the flow fields of dual-tube Pulse Detonation Engine(PDE)with convergent-divergent nozzle.The detailed flow structures were obtained under single-tube-ignition,dual-tube-ignition and different throat area conditions.The 8-species,34 elementary reactions model for hydrogen-oxygen was used.It demonstrates that the flow fields generated by single-tube-ignition can ignite the gas of side detonation tubes;interactions of the internal flow fields of multi-tube PDE keep the pressure at a higher level;increasing throat area weakens the interaction of internal flow fields,and reduces the pressure on thrust wall simultaneously,thus decreasing the engine performance.

Key words: Detonation;CE/SE+;Elementary reaction+;Parallel computation;Numerical simulation

刘建文,钟诚文,赵书苗. 多管脉冲爆震发动机流场数值研究[J]. 推进技术, 2007, 28(6): 674-678.