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Development and Validation of Spray Model of Coaxial Swirl Injector Installed in Liquid Propellant Rocket Engine  

Moon, Yoon-Wan (한국항공우주연구원 엔진팀)
Seol, Woo-Seok (한국항공우주연구원 엔진팀)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.11, no.5, 2007 , pp. 37-50 More about this Journal
Abstract
This study investigated the characteristics of spray generated by a liquid coaxial swirl injector used in a combustor of the liquid rocket engine. The linear stability analysis considered long and short wave was introduced in liquid sheet breakup. Through the hydrodynamic analysis the initial liquid sheet thickness spray angle and injection velocity were predicted. To evaluate the effect of turbulence model standard $k-{\varepsilon}$ and RNC $k-{\varepsilon}$ model were applied to numerical calculation and it was known that RNC $k-{\varepsilon}$ model was more applicable to predict spray characteristics. On the basis of this evaluation validation of the developed model was performed with swirl injector installed in LPRE and the predicted results of breakup length, spray angle, and SMD agreed well with experiments qualitatively and quantitatively.
Keywords
Liquid Sheet; Liquid Ligament; Breakup; Spray; Linear Stability Analysis; Coaxial Swirl Injector; Hydrodynamic Analysis; Liquid Rocket Engine;
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Times Cited By KSCI : 2  (Citation Analysis)
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