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http://dx.doi.org/10.6108/KSPE.2013.17.2.001

A Numerical Study on Combustion-Response Parameters of Impinging-Jet Injectors for Stability Rating  

Son, Jin Woo (세종대학교 대학원 기계공학과)
Kim, Chul Jin (세종대학교 대학원 기계공학과)
Sohn, Chae Hoon (세종대학교 기계항공우주공학부)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.17, no.2, 2013 , pp. 1-8 More about this Journal
Abstract
This study presents relations between the time lag and interaction index of the impinging-jet injectors using the time lag model in a model chamber. The response of the flame is analyzed to artificial perturbation with 5% amplitude of oxidizer speed at a resonance frequency. At the mixing point of fuel and oxidizer, which determines the characteristic length, the relationship between velocity perturbation and heat release rate is quantified by combustion parameters of interaction index and time lag. In this method, time lag or delay is calculated by the characteristic length and the average velocity obtained from numerical results. The tendency that the time delay decreases with axial jet velocity has been observed.
Keywords
Time-Lag Model; Impinging-Jet Injector; Combustion Instability;
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Times Cited By KSCI : 1  (Citation Analysis)
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