摘要
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。
To investigate the effects of venturi on the atomization, mixing and detonation process in pulse detonation engine（PDE）, the Euler-Lagrange model for gas-droplets two phase detonation is built, while the gas and liquid equations are respectively calculated by the conservation element and solution element（CE/SE） method and fourth-order Runge-Kutta method. Numerical results show that the venturi can accelerate the liquid atomization, improve the gasoline-air distribution performance and shorten the deflagration to detonation transition （DDT） distance and time. When the injector is installed at the throat of venturi, PDE has the shortest DDT distance and time. The results can provide reference for the improvement of PDE.
出处
《工程力学》
EI
CSCD
北大核心
2014年第1期229-235,共7页
Engineering Mechanics
基金
高等学校博士学科点专项科研基金项目(20093219110037)
南京理工大学自主科研专项计划项目(2011XQTR05)
