Effects of auto-ignition on combustion characteristics in a hydrogen-fueled dual-mode scramjet combustor

被引：15

作者：

Wang, Yanan ^{[1
]}

Wang, Zhenguo ^{[1
]}

Sun, Mingbo ^{[1
]}

Wang, Hongbo ^{[1
]}

机构：

[1] Natl Univ Def Technol, Sci & Technol Scramjet Lab, Changsha 410073, Hunan, Peoples R China

来源：

ACTA ASTRONAUTICA | 2018年 / 153卷

基金：

中国国家自然科学基金;

关键词：

Supersonic combustion; Jet-wake stabilized mode; Auto-ignition; Combustion stabilization; SUPERSONIC COMBUSTOR; FLAME STABILIZATION; JET FLAMES; CAVITY; ETHYLENE; FLOW;

D O I：

10.1016/j.actaastro.2018.10.013

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Combustion characteristics were investigated in a dual-mode scramjet combustor with hydrogen injected 160 mm upstream of a cavity. Tests were conducted under Mach 2.52 inflow conditions with the stagnation temperature of 1400 K and 1600 K, respectively. Under the stagnation temperature of 1600 K, strong auto-ignition induces the ignition process. When the stagnation temperature is 1400 K, intermittent blowoff and re stabilization are observed in the jet wake. It is noted that auto-ignition induces an individual new flame upstream of the cavity, after the original jet-wake flame is blown downstream and stabilizes in the cavity. It is concluded that auto-ignition contributes to the flame re-stabilization in the jet wake.

引用

页码：154 / 158

页数：5

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