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재순환 영역이 램제트 연소실에서의 열전달 특성에 미치는 영향
이건우(Keon Woo Lee),오민근(Min Keun Oh),조형희(Hyung Hee Cho),함희철(Hee Chul Ham),황기영(Ki Young Hwang) 한국추진공학회 2007 한국추진공학회지 Vol.11 No.6
This experimental study has been conducted to investigate the effect of the recirculation zone on the multi-slot film cooling in the ramjet combustor. The recirculation zone which is generated by the protrusion tip on the entrance of the coolant flow path affects on the first slot. Velocity fields, dimensionless temperature fields and adiabatic film cooling effectiveness on the downstream wall of the slot exit are measured. The results show that the film cooling performance is rapidly decreased after the slot exit by shear layer and high turbulence intensity between separated flows and coolant flows.