NDLI: Performance of supersonic model combustors with staged injections of supercritical aviation kerosene

Content Provider	Springer Nature Link
Author	Zhong, Feng Quan Fan, Xue Jun Yu, Gong Li, Jian Guo Sung, Chih Jen
Copyright Year	2010
Abstract	Supersonic model combustors using two-stage injections of supercritical kerosene were experimentally investigated in both Mach 2.5 and 3.0 model combustors with stagnation temperatures of approximately 1,750 K. Supercritical kerosene of approximately 760 K was prepared and injected in the overall equivalence ratio range of 0.5–1.46. Two pairs of integrated injector/flameholder cavity modules in tandem were used to facilitate fuel-air mixing and stable combustion. For single-stage fuel injection at an upstream location, it was found that the boundary layer separation could propagate into the isolator with increasing fuel equivalence ratio due to excessive local heat release, which in turns changed the entry airflow conditions. Moving the fuel injection to a further downstream location could alleviate the problem, while it would result in a decrease in combustion efficiency due to shorter fuel residence time. With two-stage fuel injections the overall combustor performance was shown to be improved and kerosene injections at fuel rich conditions could be reached without the upstream propagation of the boundary layer separation into the isolator. Furthermore, effects of the entry Mach number and pilot hydrogen on combustion performance were also studied.
Starting Page	661
Ending Page	668
Page Count	8
File Format	PDF
ISSN	05677718
Journal	Acta Mechanica Sinica
Volume Number	26
Issue Number	5
e-ISSN	16143116
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-07-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Supersonic combustion Staged injection Combustion efficiency Supercritical kerosene Computational Intelligence Engineering Fluid Dynamics Classical Continuum Physics Theoretical and Applied Mechanics
Content Type	Text
Resource Type	Article
Subject	Mechanical Engineering Computational Mechanics

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