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为研究文氏管对脉冲爆轰发动机内雾化混合和爆轰过程的影响,建立了气液两相爆轰的欧拉-拉格朗日模型,其中气相采用时空守恒元与求解元方法求解,液相采用四阶龙格库塔法求解。计算结果表明:文氏管能加快液滴雾化、两相混合,缩短点火起爆距离和时间;并且喷嘴安装在文氏管喉部时点火起爆距离和时间最短。研究结果可为脉冲爆轰发动机的优化设计提供参考。
In order to study the effect of Venturi tube on the atomization mixing and detonation process in a pulsed detonation engine, an Eulerian-Lagrangian model of gas-liquid two-phase detonation was established, in which the gas phase was solved by the space-time conservation element and the solution element method , The liquid phase using fourth-order Runge-Kutta method to solve. The results show that venturi can accelerate the droplet atomization and mix the two phases, shorten the ignition initiation distance and time, and the ignition initiation time and the shortest time when the nozzle is installed in the venturi throat. The results can provide reference for the optimal design of pulse detonation engine.