Effect of lean blowout performance of trapped vortex combustor of the afterburner

被引：0
|
作者：
Tan Y. [1 ]
Zhong H. [1 ]
Sun R. [1 ]
Sun H. [1 ]
机构：
[1] Sichuan Gas Turbine Establishment, Aero Engine Corporation of China, Mianyang
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2021年 / 36卷 / 09期
关键词：
Aviation kerosene; Cavity; Fuel air ratio; Lean blowout; Trapped vortex combustor of the afterburner;
D O I：
10.13224/j.cnki.jasp.20210121
中图分类号：
学科分类号：
摘要：
Three different schemes of cavity structure were designed to study the lean blowout (LBO) performance by test research method.Aviation kerosene was employed as fuel.In all operating conditions, the inlet pressure ratio of out and inner bypass varied from 0.97-1.07 and the mainstream Mach number ranged from 0.13-0.20.It was revealed that the fuel air ratio of lean blowout increased with the increasing inlet pressure ratio of out and inner bypass.LBO also increased with the increasing mainstream Mach number, and when the mainstream Mach number was larger, the increase was larger.In upper region of the vortex, the axial average of absolute velocity decreased, and the positon of the main vortex center was closer to the after wall of the cavity within a certain range, and the lean blowout performance of trapped vortex combustor of the afterburner was excellent. © 2021, Editorial Department of Journal of Aerospace Power. All right reserved.
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页码：1932 / 1941
页数：9
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