http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
모형 가스터빈 연소기에서의 연소 불안정 모드 분석에 관한 실험적 연구
이장수(Jangsu Lee),김민기(Min-Ki Kim),박성순(Sungsoon Park),윤한우(Hanwoo Yoon),윤영빈(Youngbin Yoon) 한국연소학회 2009 KOSCOSYMPOSIUM논문집 Vol.- No.39
The mainly objectives of this study was a instability characteristics in a lean premixed gas turbine dump combustor. Dynamic pressure was located at combustor and inlet section to determine combustion pressure oscillation and pressure difference each location. Inlet air was preheated to 400 ℃. The flow velocity at mixing nozzle was 40 to 70 m/s and equivalent ratio was 0.6 to 1.2. The combustor length was varied for different acoustic characteristics to 800 ~ 1100 ㎜. So we observed two dominant instability frequencies. Lower frequencies were obtained at lower equivalence ratio and it was associated with a fundamental longitudinal mode of combustor length. Higher frequencies were observed in higher equivalence ratio conditions. It was related to secondary longitudinal mode. Also fluctuation of inlet air was associated these instability mechanism.