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。
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.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2007年第6期674-678,共5页
Journal of Propulsion Technology
基金
国防科技重点实验室基金(9140C4201020602)
作者简介
刘建文（1981-），男，硕士生，研究领域为计算流体力学和高性能计算。E-mail：liujw512@163．com
