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조장희(Janghee Cho),이동희(Donghee Lee),김설희(Sulhee Kim),이동근(Donggeun Lee),문희장(Heejang Moon) 한국추진공학회 2021 한국추진공학회지 Vol.25 No.5
In this study, cold-flow test of simulant gel is conducted using a pressure swirl injector to identify spray characteristics according to gellant weight percent. Experiment results show the aircore is developed locally at the nozzle and expanded to the entire swirl chamber as the supply pressure increases. The aircore formation of simulant gel showed no significant difference compared to Newtonian fluid. The spray pattern was classified into four distinct shapes where relationship between the breakup regimes and dimensionless numbers were investigated. In the future, additional study is necessary to understand the aircore formation mechanism, stability and spray characteristics at different configuration of the swirl chamber shape.