分隔板形式对多爆震管间相互作用的影响分析

Analysis for different splitter plates influence on detonation wave interaction in multi-tube PDE

关键词:  脉冲爆震发动机  多爆震管  共用喷管

Key words:  Pulse detonation engine  Multi-tube PDE  Common nozzle

摘要:

为研究共用喷管多爆震管间爆震流场的相互作用,以氢气和氧气混合物为例,对采用不同形式分隔板的共用喷管多爆震管间的相互作用过程进行了数值模拟,并对其性能进行了比较与分析。计算结果表明,采用斜分隔板能有效地减小多爆震管间的相互影响,并且加长分隔板长度可以进一步减小多爆震管间的相互影响,同时还可以通过控制分隔板的长度来控制折射激波到达上爆震管封闭端的时间。

Abstract:

To investigate the flowfield interaction among detonation tubes sharing a common nozzle in a multi-tube pulse detonation,multi-tube PDE with different splitter plates were simulated and hydrogen-oxygen mixture was used.The results indicated that inclined splitter plate can decrease the strength of the tube-to-tube interactions.Furthermore,these studies conclude that increased splitter plate length can further decrease the strength of the tube-to-tube interactions.The time of shock arriving at upper detonation tube can be controlled through controlling the length of splitter plate.