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가스터빈 연소기에서 화염 간의 상호작용이 화염전달함수에 주는 영향 분석
곽상혁(Sanghyeok Kwak),최재홍(Jaehong Choi),이민철(Min Chul Lee),윤영빈(Youngbin Yoo) 한국연소학회 2022 KOSCOSYMPOSIUM논문집 Vol.2022 No.11
The effect of flame-flame interaction on flame transfer function (FTF) were analyzed in single- and dual-nozzle combustors. FTFs of two combustors showed similar low-pass filter trend and several peaks in the gain of FTF. The frequency where gain had peak values shifted to higher frequency in the dual-nozzle combustor due to flame-flame interaction. In addition, we found that flame-flame interaction in the dual-nozzle combustor enhanced nonlinearity in forced response of flame compared to the single-nozzle combustor. In our future works, we will measure flame structure using OH* chemiluminescence imaging to find the reason why the flame-flame interaction induces differences in FTF and nonlinearity in forced responses.