Effects of Injection Conditions on Flame Structures in Gas-Centered Swirl Coaxial Injector

International Journal of Information Technology

Wooseok Song ; Sunjung Park ; Jongkwon Lee ; Jaye Koo

关键词: Liquid rocket engine;    flame structure;    combustion instability;    dynamic pressure.;   

DOI  :  10.1999/1307-6892/10009229

学科分类：计算机应用

来源: World Academy of Science, Engineering and Technology (W A S E T)

【 摘 要 】

The objective of this paper is to observe the effects of injection conditions on flame structures in gas-centered swirl coaxial injector. Gaseous oxygen and liquid kerosene were used as propellants. For different injection conditions, two types of injector, which only differ in the diameter of the tangential inlet, were used in this study. In addition, oxidizer injection pressure was varied to control the combustion chamber pressure in different types of injector. In order to analyze the combustion instability intensity, the dynamic pressure was measured in both the combustion chamber and propellants lines. With the increase in differential pressure between the propellant injection pressure and the combustion chamber pressure, the combustion instability intensity increased. In addition, the flame structure was recorded using a high-speed camera to detect CH* chemiluminescence intensity. With the change in the injection conditions in the gas-centered swirl coaxial injector, the flame structure changed.

【 授权许可】

Unknown