Studies of a combined way of flame stability in ramjet combustor  

作　　者：Jia-xin Tao 

机构地区：[1]Pump Equipment Research Center of Xi'an Aeronautical University,Xi'an,710077,China

出　　处：《Defence Technology（防务技术）》2018年第5期441-445,共5页Defence Technology

摘　　要：numerical simulation was conducted to study the influence of bleeding. The Euler-Lagrange method was used to investigate the two-phase turbulent combustion flow. Standard k-ε turbulent model was adopted in the continuous phase simulation and particle-trajectory model was adopted in the dispersed phase simulation. The results demonstrates: air bleeding can improve the flow field after the strut and the stability of trapped vortex in the cavity; change of bleeding temperature has little effect on the total pressure recovery coefficient and significant effect on combustion efficiency; When fuel-air ratio changes, the combustor performs better in a lean oil state.numerical simulation was conducted to study the influence of bleeding. The Euler-Lagrange method was used to investigate the two-phase turbulent combustion flow. Standard k-ε turbulent model was adopted in the continuous phase simulation and particle-trajectory model was adopted in the dispersed phase simulation. The results demonstrates: air bleeding can improve the flow field after the strut and the stability of trapped vortex in the cavity; change of bleeding temperature has little effect on the total pressure recovery coefficient and significant effect on combustion efficiency; When fuel-air ratio changes, the combustor performs better in a lean oil state.

关 键 词：CAVITY STRUT BLEEDING RAMJET COMBUSTOR Numerical simulation 

分 类 号：TJ[兵器科学与技术]