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A Numerical Study on Combustion-Stability Rating of Impinging-Jet Injectors Using Hot-Fire Simulation  

Choi, Hyo-Hyun (세종대학교 대학원 기계공학과)
Sohn, Chae-Hoon (세종대학교 기계항공우주공학부)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.14, no.5, 2010 , pp. 24-31 More about this Journal
Abstract
Combustion-stability rating of impinging-jet injector is conducted numerically using hot-fire simulation in a subscale chamber with the five-element injector head. A sample F(fuel)-O(dxidizer)-O-F impinging-jet injector is adopted. In this work, instantaneous chemical reaction is adopted for hot-fire simulation based on the assumption that mixing process of fuel and oxidizer streams is controlling. The model chamber was designed based on the methodologies proposed in the previous work regarding geometrical dimensions and operating conditions. The present stability boundaries are in a good agreement with air-injection and hot-fire experimental data. The proposed numerical method can be applied cost-effectively to stability rating of jet injectors when mixing of fuel and oxidizer jets is the dominant process in instability triggering.
Keywords
Impinging-Jet Injector; Hot-Fire Simulation; Stability Boundary; Stability Rating;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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