Numerical study on flow field characteristics of RQL combustor under different quenching structures

被引：0
|
作者：
Zhang L. [1 ]
Ji Y. [1 ]
Ge B. [1 ]
Zang S. [1 ]
机构：
[1] Turbomachinery Institute, School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2019年 / 34卷 / 08期
关键词：
Flow field characteristics; Mixing characteristic; Momentum flux ratio; Quenching structure; RQL combustor;
D O I：
10.13224/j.cnki.jasp.2019.08.007
中图分类号：
学科分类号：
摘要：
The Reynolds averaged Navier-Stokes (RANS) method was used to simulate the steady flow process in rich-burn/quench/lean-burn(RQL)combustors of different quenching structures. The flow field structure of different cross sections was analyzed to study the effects of momentum flux ratio and quenching hole arrangement. Results showed that the jet deflected after entering the RQL combustor and the deflection direction was related to the swirling direction. The recirculation zone length, jet depth and high kinetic energy zone increased with the increase of the momentum flux ratio. When J≥80, a high kinetic energy zone appeared downstream the quenching jet, and gradually merged with the upstream. When J≥120, the length of the recirculation zone was substantially no longer changed. In addition, the non-central opposed jet structure C3 had a larger turbulent kinetic energy zone with better mixing. © 2019, Editorial Department of Journal of Aerospace Power. All right reserved.
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页码：1688 / 1698
页数：10
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